From 30c7a90ab7d04d5a66befd103974da1fbdafc91d Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 17:59:10 +0800
Subject: [PATCH 01/13] docs: converge Code Locator research topic

---
 .../README.md                                 | 96 +++++++++----------
 1 file changed, 48 insertions(+), 48 deletions(-)

diff --git a/docs/topics/system-one-progressive-action-space/README.md b/docs/topics/system-one-progressive-action-space/README.md
index a49369f2..13a49d3e 100644
--- a/docs/topics/system-one-progressive-action-space/README.md
+++ b/docs/topics/system-one-progressive-action-space/README.md
@@ -1,6 +1,6 @@
 # System One Progressive Action Spaces
 
-> Status: Active research topic.
+> Status: Active research topic. The Code Locator subproject has converged in Narness and active implementation/research has moved to `BestNathan/system-one-code-explore`.
 
 ## Purpose
 
@@ -625,75 +625,75 @@ The result should distinguish between tasks that are naturally frontier-driven a
 - Can the same runtime interface serve Kubernetes, coding, and browser environments?
 - How much state should be sent to System One at each branch?
 
-## 18. Code localization experiment
+## 18. Code localization research: converged findings
 
-The second reference experiment applies the same progressive-disclosure idea to source-code localization.
+Code localization started in Narness as a concrete test of progressive action spaces. That implementation line is no longer active here.
 
-```text
-repository
-  -> directory candidates
-  -> relevant directories
-  -> file candidates
-  -> relevant files
-  -> source-line candidates
-  -> grounded code snippets
-```
+Narness keeps the architectural conclusions because they generalize beyond code search:
 
-Unlike Kubernetes action selection, this stage is not a single-winner decision. Multiple directories, files, and source ranges can all be relevant, so the prototype uses independent Noul judgments rather than Choice.
+1. **The world does not need to be finite; the local frontier does.** Repository size can remain effectively unbounded as long as each decision sees a bounded, grounded set of actions.
+2. **Source content should enter state as an observation.** A range is read because a grounded `ReadRange` action was selected; the harness should not pre-expand the whole file into semantic candidates before the model chooses where to look.
+3. **File discovery and in-file navigation are different control problems.** Broad file localization can narrow the repository, while each selected file can be explored by an independent file-local runtime.
+4. **File-local state machines are a better context boundary than one shared raw-observation state.** They reduce cross-file context pressure and make budgets, stopping, and provenance attributable per file.
+5. **Action generation can remain content-agnostic.** Geometry-only actions such as head/middle/tail probes, expansion before/after observed ranges, jumps, and stop actions let the harness own navigation mechanics without smuggling semantic judgments into the controller.
+6. **Decision primitives should match semantics.** `Choice` is appropriate for mutually exclusive control decisions such as `StopFile` versus `ContinueFile`; `Noul` is appropriate for independent relevance or utility judgments where several candidates may all be valuable.
+7. **A relevance threshold is not a stopping rule.** Thresholds can control read concurrency or breadth, while stopping should be an explicit control decision or a deterministic action-space exhaustion condition.
+8. **Durable state and model-visible state should be separate.** `RuntimeState` may retain complete observations and provenance, while a bounded `DecisionView` projects only the state needed for the next judgment.
+9. **Execution traces and localization results are different artifacts.** The trace explains how the runtime explored; the canonical result describes the final files/ranges and their provenance independently of the exploration algorithm.
+10. **System Two is a comparison source, not automatic ground truth.** Cross-model traces are useful for studying coverage, cost, and exploration behavior, but model outputs should not silently become the oracle.
 
-The harness owns traversal, filesystem IO, batching, thresholds, provenance, and range merging. System One only estimates candidate relevance.
+These conclusions supersede the original fixed pipeline described by the archived Narness prototype:
 
-This broadens the working runtime abstraction:
-
-```text
-StateSpaceGenerator
-  -> CandidateSet
-  -> DecisionPrimitive
-  -> TransitionPolicy
-  -> EvidenceRecorder
-```
-
-The decision primitive can therefore vary by state:
-
-- `Choice` for selecting one grounded action from a local frontier;
-- `Noul` for independently retaining multiple relevant candidates;
-- deterministic short-circuiting where model judgment is unnecessary.
+~~~text
+repository -> directories -> files -> lines -> snippets
+~~~
 
-See [Hierarchical Code Localization with System One](../../../research/code-locator/docs/design.md) for the hypotheses, threshold/recall analysis, evidence contract, and experiment plan.
+The more durable abstraction is:
 
-## 19. Research evidence workflows
+~~~text
+State
+  -> grounded ActionSpace
+  -> judgment
+  -> typed effect
+  -> Observation
+  -> State transition
+~~~
 
-The experiments use separate workflows because they exercise different decision primitives, inputs, costs, and failure modes.
+## 19. Research lineage and migration
 
-- [System One Kubernetes experiment](../../../.github/workflows/system-one-k8s-experiment.yml) owns only the Kubernetes state-machine demo.
-- [System One Code Locator experiment](../../../.github/workflows/system-one-code-locator.yml) owns only hierarchical code localization.
+The Code Locator work went through several iterations inside Narness:
 
-The Code Locator workflow has two layers:
+- [PR #16](https://github.com/BestNathan/narness-engineering/pull/16) merged the initial hierarchical localization prototype.
+- [PR #17](https://github.com/BestNathan/narness-engineering/pull/17) accumulated the major follow-up work: two-phase reading, per-file runtimes, explicit stop control, bounded decision views, canonical localization results, and alternative exploration algorithms.
+- [PRs #21-#25](https://github.com/BestNathan/narness-engineering/pulls?q=is%3Apr+21+22+23+24+25) explored later single-file baselines and probability-frontier variants.
 
-1. deterministic fixture validation on Code Locator changes, requiring no external model service;
-2. manually dispatched real-System-One localization against a configurable subject repository.
+Those follow-up branches are historical research records, not the active implementation line.
 
-Its artifact contains only Code Locator evidence: run metadata, execution log, `trace.jsonl`, `result.json`, and `summary.md`. This keeps repository-localization research independent from Kubernetes results and makes failures, costs, and parameter sweeps attributable to one experiment.
+The active Code Locator / System One code-exploration codebase is now:
 
-## 20. Relationship to Narness
+- [BestNathan/system-one-code-explore](https://github.com/BestNathan/system-one-code-explore)
+- active research records live under that repository's `docs/research/`
 
-Narness currently defines itself as AI Workspace Engineering and explicitly does not aim to become a general Agent Runtime.
+Narness should **not** mirror ongoing implementation or experiment logs back into this repository. Only stable, reusable harness conclusions should graduate back into Narness topics or canonical architecture.
 
-This topic therefore remains research rather than a canonical Narness runtime commitment.
+The local [`research/code-locator/`](../../../research/code-locator/README.md) directory is therefore an archived snapshot of the early Narness prototype, retained for provenance.
 
-It is still relevant because it explores a neighboring harness-engineering question:
+## 20. What remains active in this topic
 
-> How should an execution environment expose context, capabilities, constraints, and deterministic actions so that a model only needs to make the smallest useful judgment?
+The broader Progressive Action Spaces topic remains active. Code Locator is now one completed case study informing these questions:
 
-If the conclusions stabilize, some of them may graduate into Narness concepts around progressive disclosure, capability representation, deterministic execution, policy, evidence, and agent observability without requiring Narness itself to own a runtime.
+- how a harness constructs bounded grounded frontiers from large dynamic environments;
+- how `RuntimeState` should be projected into a bounded `DecisionView`;
+- how action selection, effects, observations, and state reduction should be separated;
+- how Choice, Noul, deterministic transitions, and System Two escalation should compose;
+- how traces and evidence contracts make local model judgments inspectable;
+- how these ideas transfer across Kubernetes, code navigation, browsers, infrastructure, and other agent environments.
 
 ## Reference implementations
 
 - [System One Kubernetes Command Generator](../../../examples/system-one-k8s/README.md)
-- [System One Code Locator](../../../research/code-locator/README.md)
-- [Code localization research note](../../../research/code-locator/docs/design.md)
-- [System One Kubernetes experiment workflow](../../../.github/workflows/system-one-k8s-experiment.yml)
-- [System One Code Locator experiment workflow](../../../.github/workflows/system-one-code-locator.yml)
+- [Archived Narness Code Locator snapshot](../../../research/code-locator/README.md)
+- [Active System One code-exploration repository](https://github.com/BestNathan/system-one-code-explore)
 
 ## Related Narness topics
 

From ac1bb3e48a68e6f5da0d10dde0a533e416ecbc95 Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 17:59:14 +0800
Subject: [PATCH 02/13] docs: archive in-repo Code Locator snapshot

---
 research/code-locator/README.md | 242 ++++++--------------------------
 1 file changed, 44 insertions(+), 198 deletions(-)

diff --git a/research/code-locator/README.md b/research/code-locator/README.md
index 9c534649..f8e32501 100644
--- a/research/code-locator/README.md
+++ b/research/code-locator/README.md
@@ -1,219 +1,65 @@
-# System One Code Locator
+# System One Code Locator — Archived Narness Snapshot
 
-> Experimental research project. This is a localization harness, not a code-changing agent and not part of the canonical Narness runtime.
+> Status: Archived in Narness. Active implementation and ongoing research have moved to [BestNathan/system-one-code-explore](https://github.com/BestNathan/system-one-code-explore).
 
-This directory is the complete Code Locator research unit: implementation, fixtures, tests, design notes, pilot analyses, and immutable run records live together here.
+This directory is retained as historical evidence for the early Code Locator experiment that was merged into Narness in [PR #16](https://github.com/BestNathan/narness-engineering/pull/16).
 
-## Project layout
+It is **not** the current Code Locator implementation and should not be used as the starting point for new experiments.
 
-```text
-research/code-locator/
-├── README.md
-├── src/
-│   └── system_one_code_locator.py
-├── tests/
-│   └── test_system_one_code_locator.py
-├── fixtures/
-│   └── repository/
-├── docs/
-│   ├── design.md
-│   └── pilots/
-│       └── nession-websocket-2026-09-23.md
-└── runs/
-    └── <time>-run-<run_id>-attempt-<n>/
-```
+## Why this snapshot remains
 
-The `src/`, `tests/`, and `fixtures/` directories define the experiment. `docs/` contains evolving research reasoning. `runs/` is append-only evidence produced by GitHub Actions.
+Code Locator began as a concrete test of the System One Progressive Action Spaces thesis:
 
-See [design.md](docs/design.md) for the hypotheses and experiment design, and [the first Nession pilot](docs/pilots/nession-websocket-2026-09-23.md) for the first real TypeSafe baseline.
+~~~text
+large environment
+  -> bounded grounded frontier
+  -> fast model judgment
+  -> typed effect
+  -> observation
+  -> new state
+~~~
 
-This project explores whether a fast System One model can localize code by repeatedly judging a progressively disclosed search space rather than driving repository browsing through a ReAct loop.
+The early prototype in this directory explored hierarchical repository localization and established the first reproducible fixtures, traces, and workflow evidence.
 
-Given a request such as:
+Later research moved well beyond this snapshot. The follow-up work in [PR #17](https://github.com/BestNathan/narness-engineering/pull/17) explored two-phase readers, independent file-local runtimes, explicit stop control, bounded decision views, canonical localization results, and multiple exploration algorithms. Additional benchmark branches were opened as PRs #21-#25.
 
-> Help me optimize the websocket connection implementation.
+Those branches are preserved as GitHub research history, but active development no longer happens in Narness.
 
-and a repository root, the harness performs:
+## Converged findings retained by Narness
 
-```text
-repository
-  -> enumerate directory candidates
-  -> System One relevance scores
-  -> keep directories above threshold
-  -> enumerate files under retained directories
-  -> System One relevance scores
-  -> keep files above threshold
-  -> split retained files into source lines with small local context
-  -> System One relevance scores
-  -> merge adjacent relevant lines into snippets
-```
-
-The model never chooses filesystem tools, constructs paths, or controls traversal. The harness owns state expansion, thresholds, IO, provenance, batching, and result assembly.
-
-## Why Noul instead of Choice
-
-Directory, file, and line relevance are independent judgments: several candidates may all be relevant. The TypeSafe System One API's `noul` primitive returns a yes-probability for each question, so the runtime can retain every candidate whose score crosses the stage threshold.
-
-`choice` would instead normalize probability across candidates and force one winner, which is appropriate for the Kubernetes action-frontier demo but not for multi-hit code localization.
-
-## State progression
-
-```text
-RepositoryState
-  |
-  | deterministic enumeration
-  v
-DirectoryCandidate[]
-  |
-  | Noul relevance + low threshold
-  v
-RelevantDirectory[]
-  |
-  | deterministic enumeration
-  v
-FileCandidate[]
-  |
-  | Noul relevance + medium threshold
-  v
-RelevantFile[]
-  |
-  | read source + split on newlines
-  v
-LineCandidate[]
-  |
-  | Noul relevance + higher threshold
-  v
-RelevantLine[]
-  |
-  | deterministic range merge
-  v
-CodeSnippet[]
-```
-
-The defaults intentionally become stricter as the search gets deeper:
-
-```text
-directory >= 0.35
-file      >= 0.50
-line      >= 0.70
-```
-
-These are experiment parameters, not claimed optimal values. Early false negatives are especially expensive because pruning a directory removes its entire subtree. A future experiment should compare simple thresholds against threshold-plus-beam retention.
-
-## Run the deterministic fixture
-
-No API key is required:
-
-```bash
-python3 research/code-locator/src/system_one_code_locator.py \
-  research/code-locator/fixtures/repository \
-  "Help me optimize the websocket connection implementation" \
-  --offline-decider \
-  --line-threshold 0.60
-```
-
-The offline scorer is only a deterministic fixture implementation. It is not intended to emulate System One quality.
-
-## Run with TypeSafe System One
-
-```bash
-export TYPESAFE_API_KEY=...
-
-python3 research/code-locator/src/system_one_code_locator.py \
-  /path/to/repository \
-  "Help me optimize the websocket connection implementation"
-```
-
-Optional environment variables:
-
-```bash
-export TYPESAFE_API_URL=https://api.typesafe.ai/v1/systemone
-export TYPESAFE_MODEL=jev-latest
-```
-
-## Research trace
-
-Use `--trace-file` to create an append-only JSONL trace and `--output-json` to persist the final result:
-
-```bash
-python3 research/code-locator/src/system_one_code_locator.py \
-  /path/to/repository \
-  "Help me optimize the websocket connection implementation" \
-  --trace-file evidence/code-locator.trace.jsonl \
-  --output-json evidence/code-locator.result.json
-```
-
-The trace records:
-
-- the query, model, root, and thresholds;
-- every directory/file/line candidate disclosed by the harness;
-- every TypeSafe request body without credentials;
-- model responses reduced to candidate scores, latency, and token usage;
-- every threshold application and retained candidate set;
-- the final result and aggregate metrics.
-
-This makes a workflow run useful as research evidence rather than only as a pass/fail CI event.
-
-## Output contract
-
-The final result contains three provenance-preserving layers:
-
-```text
-relevant directories
-relevant files
-relevant snippets { path, start_line, end_line, score, content }
-```
-
-It also reports exposed/selected counts, model calls, token usage, and elapsed time.
-
-## Tests
-
-```bash
-python3 -m unittest discover \
-  -s research/code-locator/tests \
-  -p 'test_*.py' \
-  -v
-```
+The durable conclusions are documented in the [System One Progressive Action Spaces topic](../../docs/topics/system-one-progressive-action-space/README.md). In short:
 
-The tests verify that the deterministic fixture finds the websocket client and that real API requests use independent Noul questions.
+- keep each model decision over a small grounded action frontier;
+- treat source reads as observations produced by typed effects;
+- separate broad file discovery from file-local navigation;
+- prefer independent file-local runtimes when raw observations would otherwise overwhelm one shared context;
+- keep navigation action generation content-agnostic where possible;
+- use `Choice` for mutually exclusive control flow and `Noul` for independent relevance/utility judgments;
+- do not overload relevance thresholds as implicit stopping semantics;
+- separate durable `RuntimeState` from bounded model-visible `DecisionView`;
+- keep execution traces separate from canonical localization results.
 
-## Dedicated research workflow
+## Historical scope of this directory
 
-Code Locator has its own GitHub Actions workflow:
+The code and documents here reflect the early merged prototype, roughly:
 
-```text
-.github/workflows/system-one-code-locator.yml
-```
-
-It does not run the Kubernetes experiment.
-
-On relevant pushes and pull requests it runs only the deterministic Code Locator fixture and uploads:
-
-```text
-system-one-code-locator-offline-<run>-<attempt>/
-  run-manifest.json
-  tests.log
-  run.log
-  result.json
-  trace.jsonl
-  summary.md
-```
+~~~text
+repository
+  -> directory relevance
+  -> file relevance
+  -> source-line relevance
+  -> merged snippets
+~~~
 
-A manual `workflow_dispatch` can additionally run the real TypeSafe experiment against a configurable subject repository. That job uses the `typesafe` environment and uploads a separate `system-one-code-locator-typesafe-*` artifact.
+That design is useful as provenance, but it has been superseded as an active architecture.
 
-After push or manual runs complete, a persist job writes the evidence permanently under `runs/<time>-run-<run_id>-attempt-<n>/`. Pull-request validation never writes back to the repository.
+Do not add new Code Locator algorithms, benchmark runs, or experiment logs here.
 
-## Research limitations
+## Current implementation and research
 
-The current prototype intentionally leaves several questions open:
+Use the dedicated repository instead:
 
-- whether whole-tree directory enumeration is better than recursive frontier expansion;
-- threshold calibration and compounding false-negative risk;
-- threshold-only pruning versus keeping a minimum semantic beam;
-- line-level scoring versus symbol/block/chunk-level scoring;
-- caching repeated judgments across nearby queries;
-- comparison against ripgrep, embeddings, language-server indexes, and System Two browsing;
-- evaluation against gold relevant-file and relevant-range labels;
-- escalation when no candidate survives a stage.
+- [BestNathan/system-one-code-explore](https://github.com/BestNathan/system-one-code-explore)
+- ongoing research: `docs/research/` in that repository
 
-See the [System One Progressive Action Spaces topic](../../docs/topics/system-one-progressive-action-space/README.md) for the shared model behind this demo and the Kubernetes command generator.
+Narness may still absorb stable architectural conclusions from that work, but should not duplicate its implementation or experiment history.

From c979116caa6970b2b244284f14f06e911e151388 Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 17:59:17 +0800
Subject: [PATCH 03/13] docs: mark Code Locator case study migrated

---
 docs/topics/README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/topics/README.md b/docs/topics/README.md
index d977732a..d86487c7 100644
--- a/docs/topics/README.md
+++ b/docs/topics/README.md
@@ -56,7 +56,7 @@ Topics do not need to move through these stages linearly. They may remain open r
 | [Engineering Surfaces](engineering-surfaces/README.md) | The semantic model connecting intent, context, constraints, change impact, and evidence. | Active research |
 | [Agent-Native Repository Architecture](agent-native-repository-architecture/README.md) | How repository structure and projections should evolve for agent-first consumability with human-auditable fallback. | Active research |
 | [Change-to-Evidence Planning](change-to-evidence-planning/README.md) | How repository changes are mapped to affected Surfaces, evidence obligations, produced evidence records, and authoritative proof. | Research / preliminary design |
-| [System One Progressive Action Spaces](system-one-progressive-action-space/README.md) | How dynamic environments can reveal state incrementally and compile it into bounded grounded action frontiers for System One judgment. | Active research |
+| [System One Progressive Action Spaces](system-one-progressive-action-space/README.md) | How dynamic environments can reveal state incrementally and compile it into bounded grounded action frontiers for System One judgment. | Active research; Code Locator case study migrated |
 
 ## Candidate future topics
 

From 04153b03e17b493eaa78d815cf845bd0592308e1 Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 17:59:21 +0800
Subject: [PATCH 04/13] docs: point Code Locator research to active repository

---
 README.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index d80e5dc7..484a3fe3 100644
--- a/README.md
+++ b/README.md
@@ -224,7 +224,7 @@ bash plugins/narness/scripts/narness-rust-test-integration.sh examples/rust-work
 
 The example contains a root workspace contract, a task Skill with progressive disclosure, unit and integration evidence, an environment declaration, and a stable CI required gate.
 
-The repository also contains research prototypes that are intentionally outside the canonical Narness runtime scope, including the [System One Kubernetes command generator](examples/system-one-k8s/README.md) and [System One code locator](research/code-locator/README.md) used by the progressive-action-space topic.
+The repository also contains research prototypes that are intentionally outside the canonical Narness runtime scope. The [System One Kubernetes command generator](examples/system-one-k8s/README.md) remains an in-repository reference implementation. The [Code Locator directory](research/code-locator/README.md) is an archived Narness snapshot; active System One code-exploration implementation and research now live in [BestNathan/system-one-code-explore](https://github.com/BestNathan/system-one-code-explore).
 
 ## Adopt Narness
 
@@ -259,7 +259,8 @@ Start with [docs/adoption.md](docs/adoption.md):
 - [Change-to-Evidence Planning topic](docs/topics/change-to-evidence-planning/README.md)
 - [System One Progressive Action Spaces topic](docs/topics/system-one-progressive-action-space/README.md)
 - [System One Kubernetes command generator](examples/system-one-k8s/README.md)
-- [System One code locator](research/code-locator/README.md)
+- [Archived System One code locator snapshot](research/code-locator/README.md)
+- [Active System One code-exploration repository](https://github.com/BestNathan/system-one-code-explore)
 - [AI Workspace architecture](docs/architecture.md)
 - [Adoption guide](docs/adoption.md)
 - [Runnable Rust example](examples/rust-workspace/README.md)

From e94df8f0cb5d94452008a819b6d9b7da199ecb53 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]"
 <41898282+github-actions[bot]@users.noreply.github.com>
Date: Thu, 24 Sep 2026 09:59:34 +0000
Subject: [PATCH 05/13] research: record code locator run 35984553831

---
 .../README.md                                 |  18 +++
 .../offline/result.json                       | 139 ++++++++++++++++++
 .../offline/run-manifest.json                 |  16 ++
 .../offline/run.log                           |  33 +++++
 .../offline/summary.md                        |   7 +
 .../offline/tests.log                         |   8 +
 .../offline/trace.jsonl                       |  17 +++
 7 files changed, 238 insertions(+)
 create mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/README.md
 create mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/result.json
 create mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run-manifest.json
 create mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run.log
 create mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/summary.md
 create mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/tests.log
 create mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/trace.jsonl

diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/README.md b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/README.md
new file mode 100644
index 00000000..09c3a1b3
--- /dev/null
+++ b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/README.md
@@ -0,0 +1,18 @@
+# System One Code Locator experiment
+
+- Recorded at: `20260924T175934+0800` (UTC+8)
+- GitHub run: [35984553831](https://github.com/BestNathan/narness-engineering/actions/runs/35984553831)
+- Run attempt: `1`
+- Event: `push`
+- Repository: `BestNathan/narness-engineering`
+- Ref: `docs/converge-code-locator-research`
+- Trigger SHA: `ac1bb3e48a68e6f5da0d10dde0a533e416ecbc95`
+- Offline job: `success`
+- TypeSafe job: `skipped`
+
+## Evidence
+
+- [Offline evidence](offline/) when the offline validation produced an artifact.
+- [TypeSafe evidence](typesafe/) when a real TypeSafe experiment was requested.
+
+The files in this directory are an immutable snapshot of the evidence produced by this workflow run.
diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/result.json b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/result.json
new file mode 100644
index 00000000..396d0663
--- /dev/null
+++ b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/result.json
@@ -0,0 +1,139 @@
+{
+  "query": "Help me optimize the websocket connection implementation",
+  "root": "/home/runner/work/narness-engineering/narness-engineering/research/code-locator/fixtures/repository",
+  "model": "offline-lexical-fixture",
+  "thresholds": {
+    "directory": 0.35,
+    "file": 0.5,
+    "line": 0.6
+  },
+  "directories": [
+    {
+      "id": "web/src",
+      "payload": {
+        "path": "web/src",
+        "name": "src",
+        "child_directories": [
+          "api",
+          "ws"
+        ],
+        "direct_files": []
+      },
+      "score": 0.84
+    },
+    {
+      "id": "web/src/ws",
+      "payload": {
+        "path": "web/src/ws",
+        "name": "ws",
+        "child_directories": [],
+        "direct_files": [
+          "client.ts"
+        ]
+      },
+      "score": 0.84
+    },
+    {
+      "id": "server",
+      "payload": {
+        "path": "server",
+        "name": "server",
+        "child_directories": [
+          "src"
+        ],
+        "direct_files": []
+      },
+      "score": 0.62
+    },
+    {
+      "id": "server/src",
+      "payload": {
+        "path": "server/src",
+        "name": "src",
+        "child_directories": [],
+        "direct_files": [
+          "http.ts"
+        ]
+      },
+      "score": 0.62
+    },
+    {
+      "id": "web",
+      "payload": {
+        "path": "web",
+        "name": "web",
+        "child_directories": [
+          "src"
+        ],
+        "direct_files": []
+      },
+      "score": 0.62
+    },
+    {
+      "id": "web/src/api",
+      "payload": {
+        "path": "web/src/api",
+        "name": "api",
+        "child_directories": [],
+        "direct_files": [
+          "user.ts"
+        ]
+      },
+      "score": 0.62
+    }
+  ],
+  "files": [
+    {
+      "id": "web/src/ws/client.ts",
+      "payload": {
+        "path": "web/src/ws/client.ts",
+        "filename": "client.ts",
+        "extension": ".ts",
+        "size_bytes": 573
+      },
+      "score": 0.84
+    },
+    {
+      "id": "server/src/http.ts",
+      "payload": {
+        "path": "server/src/http.ts",
+        "filename": "http.ts",
+        "extension": ".ts",
+        "size_bytes": 76
+      },
+      "score": 0.62
+    },
+    {
+      "id": "web/src/api/user.ts",
+      "payload": {
+        "path": "web/src/api/user.ts",
+        "filename": "user.ts",
+        "extension": ".ts",
+        "size_bytes": 125
+      },
+      "score": 0.62
+    }
+  ],
+  "snippets": [
+    {
+      "path": "web/src/ws/client.ts",
+      "start_line": 1,
+      "end_line": 19,
+      "score": 0.96,
+      "content": "1: export class WebSocketClient {\n2:   private socket?: WebSocket;\n3:   private reconnectTimer?: ReturnType<typeof setTimeout>;\n4: \n5:   connect(url: string) {\n6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();\n10:   }\n11: \n12:   private scheduleReconnect(url: string) {\n13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);\n14:   }\n15: \n16:   private clearReconnect() {\n17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }\n19: }"
+    }
+  ],
+  "metrics": {
+    "model_calls": 0,
+    "input_tokens": 0,
+    "output_tokens": 0,
+    "directories_exposed": 6,
+    "directories_selected": 6,
+    "files_exposed": 3,
+    "files_selected": 3,
+    "lines_exposed": 23,
+    "lines_selected": 16,
+    "snippets": 1,
+    "elapsed_ms": 3.494
+  }
+}
diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run-manifest.json b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run-manifest.json
new file mode 100644
index 00000000..7481dd10
--- /dev/null
+++ b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run-manifest.json
@@ -0,0 +1,16 @@
+{
+  "schema_version": 1,
+  "mode": "offline",
+  "query": "Help me optimize the websocket connection implementation",
+  "model": "offline-lexical-fixture",
+  "thresholds": {
+    "directory": 0.35,
+    "file": 0.5,
+    "line": 0.6
+  },
+  "batch_size": 48,
+  "github_run_id": "35984553831",
+  "github_run_attempt": "1",
+  "commit_sha": "ac1bb3e48a68e6f5da0d10dde0a533e416ecbc95",
+  "ref_name": "docs/converge-code-locator-research"
+}
diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run.log b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run.log
new file mode 100644
index 00000000..4d028aa4
--- /dev/null
+++ b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run.log
@@ -0,0 +1,33 @@
+relevant directories:
+  0.840 web/src
+  0.840 web/src/ws
+  0.620 server
+  0.620 server/src
+  0.620 web
+  0.620 web/src/api
+relevant files:
+  0.840 web/src/ws/client.ts
+  0.620 server/src/http.ts
+  0.620 web/src/api/user.ts
+relevant snippets:
+  0.960 web/src/ws/client.ts:1-19
+1: export class WebSocketClient {
+2:   private socket?: WebSocket;
+3:   private reconnectTimer?: ReturnType<typeof setTimeout>;
+4: 
+5:   connect(url: string) {
+6:     this.socket = new WebSocket(url);
+7:     this.socket.onopen = () => this.clearReconnect();
+8:     this.socket.onclose = () => this.scheduleReconnect(url);
+9:     this.socket.onerror = () => this.socket?.close();
+10:   }
+11: 
+12:   private scheduleReconnect(url: string) {
+13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);
+14:   }
+15: 
+16:   private clearReconnect() {
+17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);
+18:   }
+19: }
+metrics: {"model_calls": 0, "input_tokens": 0, "output_tokens": 0, "directories_exposed": 6, "directories_selected": 6, "files_exposed": 3, "files_selected": 3, "lines_exposed": 23, "lines_selected": 16, "snippets": 1, "elapsed_ms": 3.494}
diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/summary.md b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/summary.md
new file mode 100644
index 00000000..517f1221
--- /dev/null
+++ b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/summary.md
@@ -0,0 +1,7 @@
+# System One Code Locator — offline fixture
+
+- Query: `Help me optimize the websocket connection implementation`
+- Directories: 6
+- Files: 3
+- Snippets: 1
+- Metrics: `{'model_calls': 0, 'input_tokens': 0, 'output_tokens': 0, 'directories_exposed': 6, 'directories_selected': 6, 'files_exposed': 3, 'files_selected': 3, 'lines_exposed': 23, 'lines_selected': 16, 'snippets': 1, 'elapsed_ms': 3.494}`
diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/tests.log b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/tests.log
new file mode 100644
index 00000000..a16277c9
--- /dev/null
+++ b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/tests.log
@@ -0,0 +1,8 @@
+test_progressive_localization (test_system_one_code_locator.DemoTest.test_progressive_localization) ... ok
+test_request_uses_noul (test_system_one_code_locator.DemoTest.test_request_uses_noul) ... ok
+test_transient_520_is_retried (test_system_one_code_locator.DemoTest.test_transient_520_is_retried) ... ok
+
+----------------------------------------------------------------------
+Ran 3 tests in 0.012s
+
+OK
diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/trace.jsonl b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/trace.jsonl
new file mode 100644
index 00000000..359f6bb3
--- /dev/null
+++ b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/trace.jsonl
@@ -0,0 +1,17 @@
+{"event": "search_started", "model": "offline-lexical-fixture", "query": "Help me optimize the websocket connection implementation", "root": "/home/runner/work/narness-engineering/narness-engineering/research/code-locator/fixtures/repository", "thresholds": {"directory": 0.35, "file": 0.5, "line": 0.6}, "timestamp": "2026-09-24T09:59:23.266342+00:00"}
+{"candidates": [{"id": "server", "payload": {"child_directories": ["src"], "direct_files": [], "name": "server", "path": "server"}}, {"id": "server/src", "payload": {"child_directories": [], "direct_files": ["http.ts"], "name": "src", "path": "server/src"}}, {"id": "web", "payload": {"child_directories": ["src"], "direct_files": [], "name": "web", "path": "web"}}, {"id": "web/src", "payload": {"child_directories": ["api", "ws"], "direct_files": [], "name": "src", "path": "web/src"}}, {"id": "web/src/api", "payload": {"child_directories": [], "direct_files": ["user.ts"], "name": "api", "path": "web/src/api"}}, {"id": "web/src/ws", "payload": {"child_directories": [], "direct_files": ["client.ts"], "name": "ws", "path": "web/src/ws"}}], "count": 6, "event": "candidates_exposed", "stage": "directory", "timestamp": "2026-09-24T09:59:23.266926+00:00"}
+{"event": "offline_scores", "scores": [{"id": "web/src", "score": 0.84}, {"id": "web/src/ws", "score": 0.84}, {"id": "server", "score": 0.62}, {"id": "server/src", "score": 0.62}, {"id": "web", "score": 0.62}, {"id": "web/src/api", "score": 0.62}], "stage": "directory", "timestamp": "2026-09-24T09:59:23.267145+00:00"}
+{"event": "threshold_applied", "input_count": 6, "selected": [{"id": "web/src", "payload": {"child_directories": ["api", "ws"], "direct_files": [], "name": "src", "path": "web/src"}, "score": 0.84}, {"id": "web/src/ws", "payload": {"child_directories": [], "direct_files": ["client.ts"], "name": "ws", "path": "web/src/ws"}, "score": 0.84}, {"id": "server", "payload": {"child_directories": ["src"], "direct_files": [], "name": "server", "path": "server"}, "score": 0.62}, {"id": "server/src", "payload": {"child_directories": [], "direct_files": ["http.ts"], "name": "src", "path": "server/src"}, "score": 0.62}, {"id": "web", "payload": {"child_directories": ["src"], "direct_files": [], "name": "web", "path": "web"}, "score": 0.62}, {"id": "web/src/api", "payload": {"child_directories": [], "direct_files": ["user.ts"], "name": "api", "path": "web/src/api"}, "score": 0.62}], "selected_count": 6, "stage": "directory", "threshold": 0.35, "timestamp": "2026-09-24T09:59:23.267246+00:00"}
+{"candidates": [{"id": "server/src/http.ts", "payload": {"extension": ".ts", "filename": "http.ts", "path": "server/src/http.ts", "size_bytes": 76}}, {"id": "web/src/api/user.ts", "payload": {"extension": ".ts", "filename": "user.ts", "path": "web/src/api/user.ts", "size_bytes": 125}}, {"id": "web/src/ws/client.ts", "payload": {"extension": ".ts", "filename": "client.ts", "path": "web/src/ws/client.ts", "size_bytes": 573}}], "count": 3, "event": "candidates_exposed", "stage": "file", "timestamp": "2026-09-24T09:59:23.268100+00:00"}
+{"event": "offline_scores", "scores": [{"id": "web/src/ws/client.ts", "score": 0.84}, {"id": "server/src/http.ts", "score": 0.62}, {"id": "web/src/api/user.ts", "score": 0.62}], "stage": "file", "timestamp": "2026-09-24T09:59:23.268268+00:00"}
+{"event": "threshold_applied", "input_count": 3, "selected": [{"id": "web/src/ws/client.ts", "payload": {"extension": ".ts", "filename": "client.ts", "path": "web/src/ws/client.ts", "size_bytes": 573}, "score": 0.84}, {"id": "server/src/http.ts", "payload": {"extension": ".ts", "filename": "http.ts", "path": "server/src/http.ts", "size_bytes": 76}, "score": 0.62}, {"id": "web/src/api/user.ts", "payload": {"extension": ".ts", "filename": "user.ts", "path": "web/src/api/user.ts", "size_bytes": 125}, "score": 0.62}], "selected_count": 3, "stage": "file", "threshold": 0.5, "timestamp": "2026-09-24T09:59:23.268335+00:00"}
+{"candidates": [{"id": "web/src/ws/client.ts:1", "payload": {"line": 1, "nearby_lines": "1: export class WebSocketClient {\n2:   private socket?: WebSocket;\n3:   private reconnectTimer?: ReturnType<typeof setTimeout>;", "path": "web/src/ws/client.ts", "text": "export class WebSocketClient {"}}, {"id": "web/src/ws/client.ts:2", "payload": {"line": 2, "nearby_lines": "1: export class WebSocketClient {\n2:   private socket?: WebSocket;\n3:   private reconnectTimer?: ReturnType<typeof setTimeout>;\n4: ", "path": "web/src/ws/client.ts", "text": "  private socket?: WebSocket;"}}, {"id": "web/src/ws/client.ts:3", "payload": {"line": 3, "nearby_lines": "1: export class WebSocketClient {\n2:   private socket?: WebSocket;\n3:   private reconnectTimer?: ReturnType<typeof setTimeout>;\n4: \n5:   connect(url: string) {", "path": "web/src/ws/client.ts", "text": "  private reconnectTimer?: ReturnType<typeof setTimeout>;"}}, {"id": "web/src/ws/client.ts:5", "payload": {"line": 5, "nearby_lines": "3:   private reconnectTimer?: ReturnType<typeof setTimeout>;\n4: \n5:   connect(url: string) {\n6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();", "path": "web/src/ws/client.ts", "text": "  connect(url: string) {"}}, {"id": "web/src/ws/client.ts:6", "payload": {"line": 6, "nearby_lines": "4: \n5:   connect(url: string) {\n6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);", "path": "web/src/ws/client.ts", "text": "    this.socket = new WebSocket(url);"}}, {"id": "web/src/ws/client.ts:7", "payload": {"line": 7, "nearby_lines": "5:   connect(url: string) {\n6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();", "path": "web/src/ws/client.ts", "text": "    this.socket.onopen = () => this.clearReconnect();"}}, {"id": "web/src/ws/client.ts:8", "payload": {"line": 8, "nearby_lines": "6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();\n10:   }", "path": "web/src/ws/client.ts", "text": "    this.socket.onclose = () => this.scheduleReconnect(url);"}}, {"id": "web/src/ws/client.ts:9", "payload": {"line": 9, "nearby_lines": "7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();\n10:   }\n11: ", "path": "web/src/ws/client.ts", "text": "    this.socket.onerror = () => this.socket?.close();"}}, {"id": "web/src/ws/client.ts:10", "payload": {"line": 10, "nearby_lines": "8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();\n10:   }\n11: \n12:   private scheduleReconnect(url: string) {", "path": "web/src/ws/client.ts", "text": "  }"}}, {"id": "web/src/ws/client.ts:12", "payload": {"line": 12, "nearby_lines": "10:   }\n11: \n12:   private scheduleReconnect(url: string) {\n13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);\n14:   }", "path": "web/src/ws/client.ts", "text": "  private scheduleReconnect(url: string) {"}}, {"id": "web/src/ws/client.ts:13", "payload": {"line": 13, "nearby_lines": "11: \n12:   private scheduleReconnect(url: string) {\n13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);\n14:   }\n15: ", "path": "web/src/ws/client.ts", "text": "    this.reconnectTimer = setTimeout(() => this.connect(url), 1000);"}}, {"id": "web/src/ws/client.ts:14", "payload": {"line": 14, "nearby_lines": "12:   private scheduleReconnect(url: string) {\n13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);\n14:   }\n15: \n16:   private clearReconnect() {", "path": "web/src/ws/client.ts", "text": "  }"}}, {"id": "web/src/ws/client.ts:16", "payload": {"line": 16, "nearby_lines": "14:   }\n15: \n16:   private clearReconnect() {\n17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }", "path": "web/src/ws/client.ts", "text": "  private clearReconnect() {"}}, {"id": "web/src/ws/client.ts:17", "payload": {"line": 17, "nearby_lines": "15: \n16:   private clearReconnect() {\n17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }\n19: }", "path": "web/src/ws/client.ts", "text": "    if (this.reconnectTimer) clearTimeout(this.reconnectTimer);"}}, {"id": "web/src/ws/client.ts:18", "payload": {"line": 18, "nearby_lines": "16:   private clearReconnect() {\n17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }\n19: }", "path": "web/src/ws/client.ts", "text": "  }"}}, {"id": "web/src/ws/client.ts:19", "payload": {"line": 19, "nearby_lines": "17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }\n19: }", "path": "web/src/ws/client.ts", "text": "}"}}], "count": 16, "event": "candidates_exposed", "parent": "web/src/ws/client.ts", "stage": "line", "timestamp": "2026-09-24T09:59:23.268547+00:00"}
+{"event": "offline_scores", "scores": [{"id": "web/src/ws/client.ts:1", "score": 0.96}, {"id": "web/src/ws/client.ts:10", "score": 0.96}, {"id": "web/src/ws/client.ts:12", "score": 0.96}, {"id": "web/src/ws/client.ts:13", "score": 0.96}, {"id": "web/src/ws/client.ts:14", "score": 0.96}, {"id": "web/src/ws/client.ts:16", "score": 0.96}, {"id": "web/src/ws/client.ts:17", "score": 0.96}, {"id": "web/src/ws/client.ts:18", "score": 0.96}, {"id": "web/src/ws/client.ts:19", "score": 0.96}, {"id": "web/src/ws/client.ts:2", "score": 0.96}, {"id": "web/src/ws/client.ts:3", "score": 0.96}, {"id": "web/src/ws/client.ts:5", "score": 0.96}, {"id": "web/src/ws/client.ts:6", "score": 0.96}, {"id": "web/src/ws/client.ts:7", "score": 0.96}, {"id": "web/src/ws/client.ts:8", "score": 0.96}, {"id": "web/src/ws/client.ts:9", "score": 0.96}], "stage": "line", "timestamp": "2026-09-24T09:59:23.268793+00:00"}
+{"event": "threshold_applied", "input_count": 16, "parent": "web/src/ws/client.ts", "selected": [{"id": "web/src/ws/client.ts:1", "payload": {"line": 1, "nearby_lines": "1: export class WebSocketClient {\n2:   private socket?: WebSocket;\n3:   private reconnectTimer?: ReturnType<typeof setTimeout>;", "path": "web/src/ws/client.ts", "text": "export class WebSocketClient {"}, "score": 0.96}, {"id": "web/src/ws/client.ts:10", "payload": {"line": 10, "nearby_lines": "8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();\n10:   }\n11: \n12:   private scheduleReconnect(url: string) {", "path": "web/src/ws/client.ts", "text": "  }"}, "score": 0.96}, {"id": "web/src/ws/client.ts:12", "payload": {"line": 12, "nearby_lines": "10:   }\n11: \n12:   private scheduleReconnect(url: string) {\n13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);\n14:   }", "path": "web/src/ws/client.ts", "text": "  private scheduleReconnect(url: string) {"}, "score": 0.96}, {"id": "web/src/ws/client.ts:13", "payload": {"line": 13, "nearby_lines": "11: \n12:   private scheduleReconnect(url: string) {\n13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);\n14:   }\n15: ", "path": "web/src/ws/client.ts", "text": "    this.reconnectTimer = setTimeout(() => this.connect(url), 1000);"}, "score": 0.96}, {"id": "web/src/ws/client.ts:14", "payload": {"line": 14, "nearby_lines": "12:   private scheduleReconnect(url: string) {\n13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);\n14:   }\n15: \n16:   private clearReconnect() {", "path": "web/src/ws/client.ts", "text": "  }"}, "score": 0.96}, {"id": "web/src/ws/client.ts:16", "payload": {"line": 16, "nearby_lines": "14:   }\n15: \n16:   private clearReconnect() {\n17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }", "path": "web/src/ws/client.ts", "text": "  private clearReconnect() {"}, "score": 0.96}, {"id": "web/src/ws/client.ts:17", "payload": {"line": 17, "nearby_lines": "15: \n16:   private clearReconnect() {\n17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }\n19: }", "path": "web/src/ws/client.ts", "text": "    if (this.reconnectTimer) clearTimeout(this.reconnectTimer);"}, "score": 0.96}, {"id": "web/src/ws/client.ts:18", "payload": {"line": 18, "nearby_lines": "16:   private clearReconnect() {\n17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }\n19: }", "path": "web/src/ws/client.ts", "text": "  }"}, "score": 0.96}, {"id": "web/src/ws/client.ts:19", "payload": {"line": 19, "nearby_lines": "17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }\n19: }", "path": "web/src/ws/client.ts", "text": "}"}, "score": 0.96}, {"id": "web/src/ws/client.ts:2", "payload": {"line": 2, "nearby_lines": "1: export class WebSocketClient {\n2:   private socket?: WebSocket;\n3:   private reconnectTimer?: ReturnType<typeof setTimeout>;\n4: ", "path": "web/src/ws/client.ts", "text": "  private socket?: WebSocket;"}, "score": 0.96}, {"id": "web/src/ws/client.ts:3", "payload": {"line": 3, "nearby_lines": "1: export class WebSocketClient {\n2:   private socket?: WebSocket;\n3:   private reconnectTimer?: ReturnType<typeof setTimeout>;\n4: \n5:   connect(url: string) {", "path": "web/src/ws/client.ts", "text": "  private reconnectTimer?: ReturnType<typeof setTimeout>;"}, "score": 0.96}, {"id": "web/src/ws/client.ts:5", "payload": {"line": 5, "nearby_lines": "3:   private reconnectTimer?: ReturnType<typeof setTimeout>;\n4: \n5:   connect(url: string) {\n6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();", "path": "web/src/ws/client.ts", "text": "  connect(url: string) {"}, "score": 0.96}, {"id": "web/src/ws/client.ts:6", "payload": {"line": 6, "nearby_lines": "4: \n5:   connect(url: string) {\n6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);", "path": "web/src/ws/client.ts", "text": "    this.socket = new WebSocket(url);"}, "score": 0.96}, {"id": "web/src/ws/client.ts:7", "payload": {"line": 7, "nearby_lines": "5:   connect(url: string) {\n6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();", "path": "web/src/ws/client.ts", "text": "    this.socket.onopen = () => this.clearReconnect();"}, "score": 0.96}, {"id": "web/src/ws/client.ts:8", "payload": {"line": 8, "nearby_lines": "6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();\n10:   }", "path": "web/src/ws/client.ts", "text": "    this.socket.onclose = () => this.scheduleReconnect(url);"}, "score": 0.96}, {"id": "web/src/ws/client.ts:9", "payload": {"line": 9, "nearby_lines": "7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();\n10:   }\n11: ", "path": "web/src/ws/client.ts", "text": "    this.socket.onerror = () => this.socket?.close();"}, "score": 0.96}], "selected_count": 16, "stage": "line", "threshold": 0.6, "timestamp": "2026-09-24T09:59:23.268868+00:00"}
+{"candidates": [{"id": "server/src/http.ts:1", "payload": {"line": 1, "nearby_lines": "1: export function startHttpServer() {\n2:   console.log('http server started');\n3: }", "path": "server/src/http.ts", "text": "export function startHttpServer() {"}}, {"id": "server/src/http.ts:2", "payload": {"line": 2, "nearby_lines": "1: export function startHttpServer() {\n2:   console.log('http server started');\n3: }", "path": "server/src/http.ts", "text": "  console.log('http server started');"}}, {"id": "server/src/http.ts:3", "payload": {"line": 3, "nearby_lines": "1: export function startHttpServer() {\n2:   console.log('http server started');\n3: }", "path": "server/src/http.ts", "text": "}"}}], "count": 3, "event": "candidates_exposed", "parent": "server/src/http.ts", "stage": "line", "timestamp": "2026-09-24T09:59:23.269214+00:00"}
+{"event": "offline_scores", "scores": [{"id": "server/src/http.ts:1", "score": 0.05}, {"id": "server/src/http.ts:2", "score": 0.05}, {"id": "server/src/http.ts:3", "score": 0.05}], "stage": "line", "timestamp": "2026-09-24T09:59:23.269317+00:00"}
+{"event": "threshold_applied", "input_count": 3, "parent": "server/src/http.ts", "selected": [], "selected_count": 0, "stage": "line", "threshold": 0.6, "timestamp": "2026-09-24T09:59:23.269370+00:00"}
+{"candidates": [{"id": "web/src/api/user.ts:1", "payload": {"line": 1, "nearby_lines": "1: export async function loadUser(id: string) {\n2:   const response = await fetch(`/api/users/${id}`);\n3:   return response.json();", "path": "web/src/api/user.ts", "text": "export async function loadUser(id: string) {"}}, {"id": "web/src/api/user.ts:2", "payload": {"line": 2, "nearby_lines": "1: export async function loadUser(id: string) {\n2:   const response = await fetch(`/api/users/${id}`);\n3:   return response.json();\n4: }", "path": "web/src/api/user.ts", "text": "  const response = await fetch(`/api/users/${id}`);"}}, {"id": "web/src/api/user.ts:3", "payload": {"line": 3, "nearby_lines": "1: export async function loadUser(id: string) {\n2:   const response = await fetch(`/api/users/${id}`);\n3:   return response.json();\n4: }", "path": "web/src/api/user.ts", "text": "  return response.json();"}}, {"id": "web/src/api/user.ts:4", "payload": {"line": 4, "nearby_lines": "2:   const response = await fetch(`/api/users/${id}`);\n3:   return response.json();\n4: }", "path": "web/src/api/user.ts", "text": "}"}}], "count": 4, "event": "candidates_exposed", "parent": "web/src/api/user.ts", "stage": "line", "timestamp": "2026-09-24T09:59:23.269512+00:00"}
+{"event": "offline_scores", "scores": [{"id": "web/src/api/user.ts:1", "score": 0.05}, {"id": "web/src/api/user.ts:2", "score": 0.05}, {"id": "web/src/api/user.ts:3", "score": 0.05}, {"id": "web/src/api/user.ts:4", "score": 0.05}], "stage": "line", "timestamp": "2026-09-24T09:59:23.269612+00:00"}
+{"event": "threshold_applied", "input_count": 4, "parent": "web/src/api/user.ts", "selected": [], "selected_count": 0, "stage": "line", "threshold": 0.6, "timestamp": "2026-09-24T09:59:23.269663+00:00"}
+{"event": "search_completed", "result": {"directories": [{"id": "web/src", "payload": {"child_directories": ["api", "ws"], "direct_files": [], "name": "src", "path": "web/src"}, "score": 0.84}, {"id": "web/src/ws", "payload": {"child_directories": [], "direct_files": ["client.ts"], "name": "ws", "path": "web/src/ws"}, "score": 0.84}, {"id": "server", "payload": {"child_directories": ["src"], "direct_files": [], "name": "server", "path": "server"}, "score": 0.62}, {"id": "server/src", "payload": {"child_directories": [], "direct_files": ["http.ts"], "name": "src", "path": "server/src"}, "score": 0.62}, {"id": "web", "payload": {"child_directories": ["src"], "direct_files": [], "name": "web", "path": "web"}, "score": 0.62}, {"id": "web/src/api", "payload": {"child_directories": [], "direct_files": ["user.ts"], "name": "api", "path": "web/src/api"}, "score": 0.62}], "files": [{"id": "web/src/ws/client.ts", "payload": {"extension": ".ts", "filename": "client.ts", "path": "web/src/ws/client.ts", "size_bytes": 573}, "score": 0.84}, {"id": "server/src/http.ts", "payload": {"extension": ".ts", "filename": "http.ts", "path": "server/src/http.ts", "size_bytes": 76}, "score": 0.62}, {"id": "web/src/api/user.ts", "payload": {"extension": ".ts", "filename": "user.ts", "path": "web/src/api/user.ts", "size_bytes": 125}, "score": 0.62}], "metrics": {"directories_exposed": 6, "directories_selected": 6, "elapsed_ms": 3.494, "files_exposed": 3, "files_selected": 3, "input_tokens": 0, "lines_exposed": 23, "lines_selected": 16, "model_calls": 0, "output_tokens": 0, "snippets": 1}, "model": "offline-lexical-fixture", "query": "Help me optimize the websocket connection implementation", "root": "/home/runner/work/narness-engineering/narness-engineering/research/code-locator/fixtures/repository", "snippets": [{"content": "1: export class WebSocketClient {\n2:   private socket?: WebSocket;\n3:   private reconnectTimer?: ReturnType<typeof setTimeout>;\n4: \n5:   connect(url: string) {\n6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();\n10:   }\n11: \n12:   private scheduleReconnect(url: string) {\n13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);\n14:   }\n15: \n16:   private clearReconnect() {\n17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }\n19: }", "end_line": 19, "path": "web/src/ws/client.ts", "score": 0.96, "start_line": 1}], "thresholds": {"directory": 0.35, "file": 0.5, "line": 0.6}}, "timestamp": "2026-09-24T09:59:23.269761+00:00"}

From fb04b8ce4c1250cedb8a3a3c875f7e71557f6892 Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 18:01:33 +0800
Subject: [PATCH 06/13] ci: retire migrated Code Locator workflow

---
 .github/workflows/system-one-code-locator.yml | 435 ------------------
 1 file changed, 435 deletions(-)
 delete mode 100644 .github/workflows/system-one-code-locator.yml

diff --git a/.github/workflows/system-one-code-locator.yml b/.github/workflows/system-one-code-locator.yml
deleted file mode 100644
index c6c00577..00000000
--- a/.github/workflows/system-one-code-locator.yml
+++ /dev/null
@@ -1,435 +0,0 @@
-name: system-one-code-locator-experiment
-
-on:
-  push:
-    paths:
-      - "research/code-locator/src/**"
-      - "research/code-locator/tests/**"
-      - "research/code-locator/fixtures/**"
-      - "research/code-locator/docs/**"
-      - "research/code-locator/README.md"
-      - ".github/workflows/system-one-code-locator.yml"
-  pull_request:
-    paths:
-      - "research/code-locator/src/**"
-      - "research/code-locator/tests/**"
-      - "research/code-locator/fixtures/**"
-      - "research/code-locator/docs/**"
-      - "research/code-locator/README.md"
-      - ".github/workflows/system-one-code-locator.yml"
-  workflow_dispatch:
-    inputs:
-      subject_repository:
-        description: Repository used by the code-localization experiment
-        required: true
-        default: BestNathan/nession
-        type: string
-      subject_ref:
-        description: Git ref of the subject repository
-        required: true
-        default: staging
-        type: string
-      query:
-        description: Code-localization task
-        required: true
-        default: Help me optimize the websocket connection implementation
-        type: string
-      directory_threshold:
-        description: Directory Noul threshold
-        required: true
-        default: "0.35"
-        type: string
-      file_threshold:
-        description: File Noul threshold
-        required: true
-        default: "0.50"
-        type: string
-      line_threshold:
-        description: Source-line Noul threshold
-        required: true
-        default: "0.70"
-        type: string
-      batch_size:
-        description: Noul questions per TypeSafe request
-        required: true
-        default: "48"
-        type: string
-      model:
-        description: TypeSafe model alias
-        required: true
-        default: jev-latest
-        type: string
-      run_typesafe:
-        description: Run the real TypeSafe System One experiment
-        required: true
-        default: false
-        type: boolean
-
-permissions:
-  contents: read
-
-concurrency:
-  group: system-one-code-locator-${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: false
-
-env:
-  QUERY: ${{ inputs.query || 'Help me optimize the websocket connection implementation' }}
-  DIRECTORY_THRESHOLD: ${{ inputs.directory_threshold || '0.35' }}
-  FILE_THRESHOLD: ${{ inputs.file_threshold || '0.50' }}
-  LINE_THRESHOLD: ${{ inputs.line_threshold || '0.70' }}
-  BATCH_SIZE: ${{ inputs.batch_size || '48' }}
-  TYPESAFE_MODEL: ${{ inputs.model || vars.TYPESAFE_MODEL || 'jev-latest' }}
-
-jobs:
-  offline:
-    name: Offline code-locator validation
-    runs-on: ubuntu-24.04
-    timeout-minutes: 10
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.13"
-
-      - name: Prepare artifact directory
-        run: mkdir -p artifacts/system-one-code-locator/offline
-
-      - name: Run unit tests
-        shell: bash
-        run: |
-          set -o pipefail
-          python3 -m unittest discover             -s research/code-locator/tests             -p 'test_*.py'             -v 2>&1 | tee artifacts/system-one-code-locator/offline/tests.log
-
-      - name: Run deterministic fixture experiment
-        shell: bash
-        run: |
-          set -o pipefail
-          python3 research/code-locator/src/system_one_code_locator.py             research/code-locator/fixtures/repository             "$QUERY"             --offline-decider             --directory-threshold "$DIRECTORY_THRESHOLD"             --file-threshold "$FILE_THRESHOLD"             --line-threshold 0.60             --batch-size "$BATCH_SIZE"             --trace-file artifacts/system-one-code-locator/offline/trace.jsonl             --output-json artifacts/system-one-code-locator/offline/result.json             2>&1 | tee artifacts/system-one-code-locator/offline/run.log
-
-      - name: Save run metadata and summary
-        env:
-          RUN_ID: ${{ github.run_id }}
-          RUN_ATTEMPT: ${{ github.run_attempt }}
-          COMMIT_SHA: ${{ github.sha }}
-          REF_NAME: ${{ github.ref_name }}
-        run: |
-          python3 - <<'PY'
-          import json
-          import os
-          from pathlib import Path
-
-          root = Path("artifacts/system-one-code-locator/offline")
-          result = json.loads((root / "result.json").read_text())
-
-          metadata = {
-              "schema_version": 1,
-              "mode": "offline",
-              "query": os.environ["QUERY"],
-              "model": "offline-lexical-fixture",
-              "thresholds": {
-                  "directory": float(os.environ["DIRECTORY_THRESHOLD"]),
-                  "file": float(os.environ["FILE_THRESHOLD"]),
-                  "line": 0.60,
-              },
-              "batch_size": int(os.environ["BATCH_SIZE"]),
-              "github_run_id": os.environ["RUN_ID"],
-              "github_run_attempt": os.environ["RUN_ATTEMPT"],
-              "commit_sha": os.environ["COMMIT_SHA"],
-              "ref_name": os.environ["REF_NAME"],
-          }
-          (root / "run-manifest.json").write_text(
-              json.dumps(metadata, indent=2) + "\n",
-              encoding="utf-8",
-          )
-
-          lines = [
-              "# System One Code Locator — offline fixture",
-              "",
-              f"- Query: `{metadata['query']}`",
-              f"- Directories: {len(result.get('directories', []))}",
-              f"- Files: {len(result.get('files', []))}",
-              f"- Snippets: {len(result.get('snippets', []))}",
-              f"- Metrics: `{result.get('metrics', {})}`",
-          ]
-          (root / "summary.md").write_text("\n".join(lines) + "\n")
-          PY
-
-      - name: Publish summary
-        if: always()
-        run: |
-          if test -f artifacts/system-one-code-locator/offline/summary.md; then
-            cat artifacts/system-one-code-locator/offline/summary.md >> "$GITHUB_STEP_SUMMARY"
-          fi
-
-      - name: Upload offline experiment artifacts
-        if: always()
-        uses: actions/upload-artifact@v4
-        with:
-          name: system-one-code-locator-offline-${{ github.run_id }}-${{ github.run_attempt }}
-          path: artifacts/system-one-code-locator/offline/
-          if-no-files-found: error
-          retention-days: 90
-
-  typesafe:
-    name: Real TypeSafe code-locator experiment
-    if: ${{ github.event_name == 'workflow_dispatch' && inputs.run_typesafe }}
-    runs-on: ubuntu-24.04
-    environment: typesafe
-    timeout-minutes: 120
-
-    steps:
-      - name: Checkout Narness harness
-        uses: actions/checkout@v4
-        with:
-          path: narness
-          fetch-depth: 1
-          persist-credentials: false
-
-      - name: Checkout subject repository
-        uses: actions/checkout@v4
-        with:
-          repository: ${{ inputs.subject_repository }}
-          ref: ${{ inputs.subject_ref }}
-          path: subject
-          fetch-depth: 1
-          persist-credentials: false
-
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.13"
-
-      - name: Require TypeSafe credentials
-        env:
-          TYPESAFE_API_KEY: ${{ secrets.TYPESAFE_API_KEY || vars.TYPESAFE_API_KEY }}
-        run: |
-          test -n "$TYPESAFE_API_KEY" || {
-            echo "TYPESAFE_API_KEY is required in the typesafe environment." >&2
-            exit 2
-          }
-
-      - name: Prepare artifact directory
-        run: mkdir -p artifacts/system-one-code-locator/typesafe
-
-      - name: Save run manifest
-        env:
-          SUBJECT_REPOSITORY: ${{ inputs.subject_repository }}
-          SUBJECT_REF: ${{ inputs.subject_ref }}
-          RUN_ID: ${{ github.run_id }}
-          RUN_ATTEMPT: ${{ github.run_attempt }}
-          HARNESS_SHA: ${{ github.sha }}
-        run: |
-          python3 - <<'PY'
-          import json
-          import os
-          import subprocess
-          from pathlib import Path
-
-          def revision(path):
-              return subprocess.check_output(
-                  ["git", "-C", path, "rev-parse", "HEAD"],
-                  text=True,
-              ).strip()
-
-          payload = {
-              "schema_version": 1,
-              "mode": "typesafe",
-              "query": os.environ["QUERY"],
-              "model": os.environ["TYPESAFE_MODEL"],
-              "thresholds": {
-                  "directory": float(os.environ["DIRECTORY_THRESHOLD"]),
-                  "file": float(os.environ["FILE_THRESHOLD"]),
-                  "line": float(os.environ["LINE_THRESHOLD"]),
-              },
-              "batch_size": int(os.environ["BATCH_SIZE"]),
-              "harness": {
-                  "repository": os.environ.get("GITHUB_REPOSITORY"),
-                  "revision": revision("narness"),
-              },
-              "subject": {
-                  "repository": os.environ["SUBJECT_REPOSITORY"],
-                  "requested_ref": os.environ["SUBJECT_REF"],
-                  "revision": revision("subject"),
-              },
-              "github_run_id": os.environ["RUN_ID"],
-              "github_run_attempt": os.environ["RUN_ATTEMPT"],
-          }
-          root = Path("artifacts/system-one-code-locator/typesafe")
-          (root / "run-manifest.json").write_text(
-              json.dumps(payload, indent=2) + "\n",
-              encoding="utf-8",
-          )
-          PY
-
-      - name: Run real System One code locator
-        env:
-          TYPESAFE_API_KEY: ${{ secrets.TYPESAFE_API_KEY || vars.TYPESAFE_API_KEY }}
-          TYPESAFE_API_URL: ${{ vars.TYPESAFE_API_URL || 'https://api.typesafe.ai/v1/systemone' }}
-        shell: bash
-        run: |
-          set -o pipefail
-          python3 narness/research/code-locator/src/system_one_code_locator.py             subject             "$QUERY"             --directory-threshold "$DIRECTORY_THRESHOLD"             --file-threshold "$FILE_THRESHOLD"             --line-threshold "$LINE_THRESHOLD"             --batch-size "$BATCH_SIZE"             --model "$TYPESAFE_MODEL"             --trace-file artifacts/system-one-code-locator/typesafe/trace.jsonl             --output-json artifacts/system-one-code-locator/typesafe/result.json             2>&1 | tee artifacts/system-one-code-locator/typesafe/run.log
-
-      - name: Build research summary
-        if: always()
-        run: |
-          python3 - <<'PY'
-          import json
-          import os
-          from pathlib import Path
-
-          root = Path("artifacts/system-one-code-locator/typesafe")
-          manifest_path = root / "run-manifest.json"
-          result_path = root / "result.json"
-
-          lines = ["# System One Code Locator — TypeSafe run", ""]
-
-          if manifest_path.exists():
-              manifest = json.loads(manifest_path.read_text())
-              lines += [
-                  f"- Subject: `{manifest['subject']['repository']}@{manifest['subject']['revision']}`",
-                  f"- Query: `{manifest['query']}`",
-                  f"- Model: `{manifest['model']}`",
-                  f"- Thresholds: `{manifest['thresholds']}`",
-                  "",
-              ]
-
-          if result_path.exists():
-              result = json.loads(result_path.read_text())
-              lines += [
-                  "## Result",
-                  "",
-                  f"- Directories: {len(result.get('directories', []))}",
-                  f"- Files: {len(result.get('files', []))}",
-                  f"- Snippets: {len(result.get('snippets', []))}",
-                  f"- Metrics: `{result.get('metrics', {})}`",
-                  "",
-                  "### Selected files",
-                  "",
-              ]
-              lines += [
-                  f"- `{item['id']}` ({item['score']:.3f})"
-                  for item in result.get("files", [])
-              ]
-          else:
-              lines += [
-                  "## Result",
-                  "",
-                  "The experiment did not produce result.json. Inspect run.log and trace.jsonl.",
-              ]
-
-          summary = "\n".join(lines) + "\n"
-          (root / "summary.md").write_text(summary)
-          with open(Path(os.environ["GITHUB_STEP_SUMMARY"]), "a") as handle:
-              handle.write(summary)
-          PY
-        env:
-          PYTHONUNBUFFERED: "1"
-
-      - name: Upload TypeSafe experiment artifacts
-        if: always()
-        uses: actions/upload-artifact@v4
-        with:
-          name: system-one-code-locator-typesafe-${{ github.run_id }}-${{ github.run_attempt }}
-          path: artifacts/system-one-code-locator/typesafe/
-          if-no-files-found: warn
-          retention-days: 90
-
-  persist-record:
-    name: Persist experiment record
-    needs:
-      - offline
-      - typesafe
-    if: ${{ always() && github.event_name != 'pull_request' }}
-    runs-on: ubuntu-24.04
-    timeout-minutes: 10
-    permissions:
-      contents: write
-
-    steps:
-      - name: Checkout experiment branch
-        uses: actions/checkout@v4
-        with:
-          ref: ${{ github.ref_name }}
-          fetch-depth: 1
-          persist-credentials: true
-
-      - name: Download offline evidence
-        uses: actions/download-artifact@v4
-        continue-on-error: true
-        with:
-          name: system-one-code-locator-offline-${{ github.run_id }}-${{ github.run_attempt }}
-          path: .experiment-record/offline
-
-      - name: Download TypeSafe evidence
-        if: ${{ github.event_name == 'workflow_dispatch' && inputs.run_typesafe }}
-        uses: actions/download-artifact@v4
-        continue-on-error: true
-        with:
-          name: system-one-code-locator-typesafe-${{ github.run_id }}-${{ github.run_attempt }}
-          path: .experiment-record/typesafe
-
-      - name: Materialize repository record
-        env:
-          OFFLINE_RESULT: ${{ needs.offline.result }}
-          TYPESAFE_RESULT: ${{ needs.typesafe.result }}
-          RUN_URL: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}
-        shell: bash
-        run: |
-          set -euo pipefail
-
-          stamp="$(TZ=Asia/Shanghai date +'%Y%m%dT%H%M%S%z')"
-          record="research/code-locator/runs/${stamp}-run-${GITHUB_RUN_ID}-attempt-${GITHUB_RUN_ATTEMPT}"
-          mkdir -p "$record"
-
-          if test -d .experiment-record/offline; then
-            mkdir -p "$record/offline"
-            cp -a .experiment-record/offline/. "$record/offline/"
-          fi
-
-          if test -d .experiment-record/typesafe; then
-            mkdir -p "$record/typesafe"
-            cp -a .experiment-record/typesafe/. "$record/typesafe/"
-          fi
-
-          {
-            echo "# System One Code Locator experiment"
-            echo
-            printf -- '- Recorded at: `%s` (UTC+8)\n' "$stamp"
-            printf -- '- GitHub run: [%s](%s)\n' "$GITHUB_RUN_ID" "$RUN_URL"
-            printf -- '- Run attempt: `%s`\n' "$GITHUB_RUN_ATTEMPT"
-            printf -- '- Event: `%s`\n' "$GITHUB_EVENT_NAME"
-            printf -- '- Repository: `%s`\n' "$GITHUB_REPOSITORY"
-            printf -- '- Ref: `%s`\n' "$GITHUB_REF_NAME"
-            printf -- '- Trigger SHA: `%s`\n' "$GITHUB_SHA"
-            printf -- '- Offline job: `%s`\n' "$OFFLINE_RESULT"
-            printf -- '- TypeSafe job: `%s`\n' "$TYPESAFE_RESULT"
-            echo
-            echo "## Evidence"
-            echo
-            echo "- [Offline evidence](offline/) when the offline validation produced an artifact."
-            echo "- [TypeSafe evidence](typesafe/) when a real TypeSafe experiment was requested."
-            echo
-            echo "The files in this directory are an immutable snapshot of the evidence produced by this workflow run."
-          } > "$record/README.md"
-
-          echo "RECORD_DIR=$record" >> "$GITHUB_ENV"
-
-      - name: Commit experiment record
-        shell: bash
-        run: |
-          set -euo pipefail
-          git config user.name "github-actions[bot]"
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-
-          git add "$RECORD_DIR"
-
-          if git diff --cached --quiet; then
-            echo "No experiment evidence to commit."
-            exit 0
-          fi
-
-          git commit -m "research: record code locator run ${GITHUB_RUN_ID}"
-          git pull --rebase origin "${GITHUB_REF_NAME}"
-          git push origin "HEAD:${GITHUB_REF_NAME}"

From 92f2b72062f5d08af9455bc44837455e0f51215c Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 18:01:37 +0800
Subject: [PATCH 07/13] research: remove auto-generated Code Locator migration
 run

---
 .../README.md                                  | 18 ------------------
 1 file changed, 18 deletions(-)
 delete mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/README.md

diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/README.md b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/README.md
deleted file mode 100644
index 09c3a1b3..00000000
--- a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/README.md
+++ /dev/null
@@ -1,18 +0,0 @@
-# System One Code Locator experiment
-
-- Recorded at: `20260924T175934+0800` (UTC+8)
-- GitHub run: [35984553831](https://github.com/BestNathan/narness-engineering/actions/runs/35984553831)
-- Run attempt: `1`
-- Event: `push`
-- Repository: `BestNathan/narness-engineering`
-- Ref: `docs/converge-code-locator-research`
-- Trigger SHA: `ac1bb3e48a68e6f5da0d10dde0a533e416ecbc95`
-- Offline job: `success`
-- TypeSafe job: `skipped`
-
-## Evidence
-
-- [Offline evidence](offline/) when the offline validation produced an artifact.
-- [TypeSafe evidence](typesafe/) when a real TypeSafe experiment was requested.
-
-The files in this directory are an immutable snapshot of the evidence produced by this workflow run.

From 56c6041cb09af40bb40dd683714dfd9bcb778ab7 Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 18:01:40 +0800
Subject: [PATCH 08/13] research: remove auto-generated Code Locator migration
 run

---
 .../offline/result.json                       | 139 ------------------
 1 file changed, 139 deletions(-)
 delete mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/result.json

diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/result.json b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/result.json
deleted file mode 100644
index 396d0663..00000000
--- a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/result.json
+++ /dev/null
@@ -1,139 +0,0 @@
-{
-  "query": "Help me optimize the websocket connection implementation",
-  "root": "/home/runner/work/narness-engineering/narness-engineering/research/code-locator/fixtures/repository",
-  "model": "offline-lexical-fixture",
-  "thresholds": {
-    "directory": 0.35,
-    "file": 0.5,
-    "line": 0.6
-  },
-  "directories": [
-    {
-      "id": "web/src",
-      "payload": {
-        "path": "web/src",
-        "name": "src",
-        "child_directories": [
-          "api",
-          "ws"
-        ],
-        "direct_files": []
-      },
-      "score": 0.84
-    },
-    {
-      "id": "web/src/ws",
-      "payload": {
-        "path": "web/src/ws",
-        "name": "ws",
-        "child_directories": [],
-        "direct_files": [
-          "client.ts"
-        ]
-      },
-      "score": 0.84
-    },
-    {
-      "id": "server",
-      "payload": {
-        "path": "server",
-        "name": "server",
-        "child_directories": [
-          "src"
-        ],
-        "direct_files": []
-      },
-      "score": 0.62
-    },
-    {
-      "id": "server/src",
-      "payload": {
-        "path": "server/src",
-        "name": "src",
-        "child_directories": [],
-        "direct_files": [
-          "http.ts"
-        ]
-      },
-      "score": 0.62
-    },
-    {
-      "id": "web",
-      "payload": {
-        "path": "web",
-        "name": "web",
-        "child_directories": [
-          "src"
-        ],
-        "direct_files": []
-      },
-      "score": 0.62
-    },
-    {
-      "id": "web/src/api",
-      "payload": {
-        "path": "web/src/api",
-        "name": "api",
-        "child_directories": [],
-        "direct_files": [
-          "user.ts"
-        ]
-      },
-      "score": 0.62
-    }
-  ],
-  "files": [
-    {
-      "id": "web/src/ws/client.ts",
-      "payload": {
-        "path": "web/src/ws/client.ts",
-        "filename": "client.ts",
-        "extension": ".ts",
-        "size_bytes": 573
-      },
-      "score": 0.84
-    },
-    {
-      "id": "server/src/http.ts",
-      "payload": {
-        "path": "server/src/http.ts",
-        "filename": "http.ts",
-        "extension": ".ts",
-        "size_bytes": 76
-      },
-      "score": 0.62
-    },
-    {
-      "id": "web/src/api/user.ts",
-      "payload": {
-        "path": "web/src/api/user.ts",
-        "filename": "user.ts",
-        "extension": ".ts",
-        "size_bytes": 125
-      },
-      "score": 0.62
-    }
-  ],
-  "snippets": [
-    {
-      "path": "web/src/ws/client.ts",
-      "start_line": 1,
-      "end_line": 19,
-      "score": 0.96,
-      "content": "1: export class WebSocketClient {\n2:   private socket?: WebSocket;\n3:   private reconnectTimer?: ReturnType<typeof setTimeout>;\n4: \n5:   connect(url: string) {\n6:     this.socket = new WebSocket(url);\n7:     this.socket.onopen = () => this.clearReconnect();\n8:     this.socket.onclose = () => this.scheduleReconnect(url);\n9:     this.socket.onerror = () => this.socket?.close();\n10:   }\n11: \n12:   private scheduleReconnect(url: string) {\n13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);\n14:   }\n15: \n16:   private clearReconnect() {\n17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);\n18:   }\n19: }"
-    }
-  ],
-  "metrics": {
-    "model_calls": 0,
-    "input_tokens": 0,
-    "output_tokens": 0,
-    "directories_exposed": 6,
-    "directories_selected": 6,
-    "files_exposed": 3,
-    "files_selected": 3,
-    "lines_exposed": 23,
-    "lines_selected": 16,
-    "snippets": 1,
-    "elapsed_ms": 3.494
-  }
-}

From 933b0037007cb4c16fdd98cd5f6ae066831f57d0 Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 18:01:44 +0800
Subject: [PATCH 09/13] research: remove auto-generated Code Locator migration
 run

---
 .../offline/run-manifest.json                    | 16 ----------------
 1 file changed, 16 deletions(-)
 delete mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run-manifest.json

diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run-manifest.json b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run-manifest.json
deleted file mode 100644
index 7481dd10..00000000
--- a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run-manifest.json
+++ /dev/null
@@ -1,16 +0,0 @@
-{
-  "schema_version": 1,
-  "mode": "offline",
-  "query": "Help me optimize the websocket connection implementation",
-  "model": "offline-lexical-fixture",
-  "thresholds": {
-    "directory": 0.35,
-    "file": 0.5,
-    "line": 0.6
-  },
-  "batch_size": 48,
-  "github_run_id": "35984553831",
-  "github_run_attempt": "1",
-  "commit_sha": "ac1bb3e48a68e6f5da0d10dde0a533e416ecbc95",
-  "ref_name": "docs/converge-code-locator-research"
-}

From c4c2b5dda155cea0907f2566945981095ef27170 Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 18:01:47 +0800
Subject: [PATCH 10/13] research: remove auto-generated Code Locator migration
 run

---
 .../offline/run.log                           | 33 -------------------
 1 file changed, 33 deletions(-)
 delete mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run.log

diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run.log b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run.log
deleted file mode 100644
index 4d028aa4..00000000
--- a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/run.log
+++ /dev/null
@@ -1,33 +0,0 @@
-relevant directories:
-  0.840 web/src
-  0.840 web/src/ws
-  0.620 server
-  0.620 server/src
-  0.620 web
-  0.620 web/src/api
-relevant files:
-  0.840 web/src/ws/client.ts
-  0.620 server/src/http.ts
-  0.620 web/src/api/user.ts
-relevant snippets:
-  0.960 web/src/ws/client.ts:1-19
-1: export class WebSocketClient {
-2:   private socket?: WebSocket;
-3:   private reconnectTimer?: ReturnType<typeof setTimeout>;
-4: 
-5:   connect(url: string) {
-6:     this.socket = new WebSocket(url);
-7:     this.socket.onopen = () => this.clearReconnect();
-8:     this.socket.onclose = () => this.scheduleReconnect(url);
-9:     this.socket.onerror = () => this.socket?.close();
-10:   }
-11: 
-12:   private scheduleReconnect(url: string) {
-13:     this.reconnectTimer = setTimeout(() => this.connect(url), 1000);
-14:   }
-15: 
-16:   private clearReconnect() {
-17:     if (this.reconnectTimer) clearTimeout(this.reconnectTimer);
-18:   }
-19: }
-metrics: {"model_calls": 0, "input_tokens": 0, "output_tokens": 0, "directories_exposed": 6, "directories_selected": 6, "files_exposed": 3, "files_selected": 3, "lines_exposed": 23, "lines_selected": 16, "snippets": 1, "elapsed_ms": 3.494}

From 3ded99d12971c103c9a51d9c95379870573b24d6 Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 18:01:51 +0800
Subject: [PATCH 11/13] research: remove auto-generated Code Locator migration
 run

---
 .../offline/summary.md                                     | 7 -------
 1 file changed, 7 deletions(-)
 delete mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/summary.md

diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/summary.md b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/summary.md
deleted file mode 100644
index 517f1221..00000000
--- a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/summary.md
+++ /dev/null
@@ -1,7 +0,0 @@
-# System One Code Locator — offline fixture
-
-- Query: `Help me optimize the websocket connection implementation`
-- Directories: 6
-- Files: 3
-- Snippets: 1
-- Metrics: `{'model_calls': 0, 'input_tokens': 0, 'output_tokens': 0, 'directories_exposed': 6, 'directories_selected': 6, 'files_exposed': 3, 'files_selected': 3, 'lines_exposed': 23, 'lines_selected': 16, 'snippets': 1, 'elapsed_ms': 3.494}`

From bd3a95cc884be6b5253b4951b198fe5b98772d74 Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 18:01:53 +0800
Subject: [PATCH 12/13] research: remove auto-generated Code Locator migration
 run

---
 .../offline/tests.log                                     | 8 --------
 1 file changed, 8 deletions(-)
 delete mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/tests.log

diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/tests.log b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/tests.log
deleted file mode 100644
index a16277c9..00000000
--- a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/tests.log
+++ /dev/null
@@ -1,8 +0,0 @@
-test_progressive_localization (test_system_one_code_locator.DemoTest.test_progressive_localization) ... ok
-test_request_uses_noul (test_system_one_code_locator.DemoTest.test_request_uses_noul) ... ok
-test_transient_520_is_retried (test_system_one_code_locator.DemoTest.test_transient_520_is_retried) ... ok
-
-----------------------------------------------------------------------
-Ran 3 tests in 0.012s
-
-OK

From 23ff9f63ae13ad8005d6315d45e6c0e979018d9a Mon Sep 17 00:00:00 2001
From: Nathan <308719298@qq.com>
Date: Thu, 24 Sep 2026 18:01:57 +0800
Subject: [PATCH 13/13] research: remove auto-generated Code Locator migration
 run

---
 .../offline/trace.jsonl                         | 17 -----------------
 1 file changed, 17 deletions(-)
 delete mode 100644 research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/trace.jsonl

diff --git a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/trace.jsonl b/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/trace.jsonl
deleted file mode 100644
index 359f6bb3..00000000
--- a/research/code-locator/runs/20260924T175934+0800-run-35984553831-attempt-1/offline/trace.jsonl
+++ /dev/null
@@ -1,17 +0,0 @@
-{"event": "search_started", "model": "offline-lexical-fixture", "query": "Help me optimize the websocket connection implementation", "root": "/home/runner/work/narness-engineering/narness-engineering/research/code-locator/fixtures/repository", "thresholds": {"directory": 0.35, "file": 0.5, "line": 0.6}, "timestamp": "2026-09-24T09:59:23.266342+00:00"}
-{"candidates": [{"id": "server", "payload": {"child_directories": ["src"], "direct_files": [], "name": "server", "path": "server"}}, {"id": "server/src", "payload": {"child_directories": [], "direct_files": ["http.ts"], "name": "src", "path": "server/src"}}, {"id": "web", "payload": {"child_directories": ["src"], "direct_files": [], "name": "web", "path": "web"}}, {"id": "web/src", "payload": {"child_directories": ["api", "ws"], "direct_files": [], "name": "src", "path": "web/src"}}, {"id": "web/src/api", "payload": {"child_directories": [], "direct_files": ["user.ts"], "name": "api", "path": "web/src/api"}}, {"id": "web/src/ws", "payload": {"child_directories": [], "direct_files": ["client.ts"], "name": "ws", "path": "web/src/ws"}}], "count": 6, "event": "candidates_exposed", "stage": "directory", "timestamp": "2026-09-24T09:59:23.266926+00:00"}
-{"event": "offline_scores", "scores": [{"id": "web/src", "score": 0.84}, {"id": "web/src/ws", "score": 0.84}, {"id": "server", "score": 0.62}, {"id": "server/src", "score": 0.62}, {"id": "web", "score": 0.62}, {"id": "web/src/api", "score": 0.62}], "stage": "directory", "timestamp": "2026-09-24T09:59:23.267145+00:00"}
-{"event": "threshold_applied", "input_count": 6, "selected": [{"id": "web/src", "payload": {"child_directories": ["api", "ws"], "direct_files": [], "name": "src", "path": "web/src"}, "score": 0.84}, {"id": "web/src/ws", "payload": {"child_directories": [], "direct_files": ["client.ts"], "name": "ws", "path": "web/src/ws"}, "score": 0.84}, {"id": "server", "payload": {"child_directories": ["src"], "direct_files": [], "name": "server", "path": "server"}, "score": 0.62}, {"id": "server/src", "payload": {"child_directories": [], "direct_files": ["http.ts"], "name": "src", "path": "server/src"}, "score": 0.62}, {"id": "web", "payload": {"child_directories": ["src"], "direct_files": [], "name": "web", "path": "web"}, "score": 0.62}, {"id": "web/src/api", "payload": {"child_directories": [], "direct_files": ["user.ts"], "name": "api", "path": "web/src/api"}, "score": 0.62}], "selected_count": 6, "stage": "directory", "threshold": 0.35, "timestamp": "2026-09-24T09:59:23.267246+00:00"}
-{"candidates": [{"id": "server/src/http.ts", "payload": {"extension": ".ts", "filename": "http.ts", "path": "server/src/http.ts", "size_bytes": 76}}, {"id": "web/src/api/user.ts", "payload": {"extension": ".ts", "filename": "user.ts", "path": "web/src/api/user.ts", "size_bytes": 125}}, {"id": "web/src/ws/client.ts", "payload": {"extension": ".ts", "filename": "client.ts", "path": "web/src/ws/client.ts", "size_bytes": 573}}], "count": 3, "event": "candidates_exposed", "stage": "file", "timestamp": "2026-09-24T09:59:23.268100+00:00"}
-{"event": "offline_scores", "scores": [{"id": "web/src/ws/client.ts", "score": 0.84}, {"id": "server/src/http.ts", "score": 0.62}, {"id": "web/src/api/user.ts", "score": 0.62}], "stage": "file", "timestamp": "2026-09-24T09:59:23.268268+00:00"}
-{"event": "threshold_applied", "input_count": 3, "selected": [{"id": "web/src/ws/client.ts", "payload": {"extension": ".ts", "filename": "client.ts", "path": "web/src/ws/client.ts", "size_bytes": 573}, "score": 0.84}, {"id": "server/src/http.ts", "payload": {"extension": ".ts", "filename": "http.ts", "path": "server/src/http.ts", "size_bytes": 76}, "score": 0.62}, {"id": "web/src/api/user.ts", "payload": {"extension": ".ts", "filename": "user.ts", "path": "web/src/api/user.ts", "size_bytes": 125}, "score": 0.62}], "selected_count": 3, "stage": "file", "threshold": 0.5, "timestamp": "2026-09-24T09:59:23.268335+00:00"}
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