feat(context): close long-lived incremental local context service (#682)

[kunaldhongade]

Summary

• Close feat(index): add a long-lived incremental local context service for agent workflows #682 with process locking, incremental rebuilds, crash-safe state, and session-scoped queries over a shared local index
• Expose codedecay context serve|health|query|rebuild|reset|stop and MCP context_service
• Cover UAT-INDEX-1..5 plus CLI/MCP smoke; docs updated for local-only service behavior and scale path

Test plan

• vitest context-service + UAT-INDEX + CLI parser + MCP context_service
• tsc -p tsconfig.base.json --noEmit
• built CLI context health --format json
• CI green on this PR

Closes #682

Made with Cursor

[github-actions]

CodeDecay PR Check

Lead catch: Test appears to copy implementation logic — packages/knowledge/test/context-service-uat.test.ts:24

packages/knowledge/test/context-service-uat.test.ts:24-26 matches executable logic from packages/knowledge/src/service-runtime.ts:17-19: const builder = createDefaultContextServiceBuild(); | const service = new LocalContextService({ | rootDir,. This can make tests pass without protecting real behavior.

Risk: High · Merge 100/100 · Decay 54/100 · Security 0/100

Full CodeDecay report

CodeDecay Report

Overall risk: High

Score	Value
Merge risk	100/100
Decay risk	54/100
Security risk	0/100

Findings	Count
High	8
Medium	7
Low	24

Changed Files

• docs/context-service.md modified (+29/-1)
• packages/cli/src/commands/context.ts modified (+123/-4)
• packages/cli/src/docs/command-docs/orchestration.ts modified (+14/-8)
• packages/cli/src/parsers/context.ts modified (+20/-1)
• packages/cli/src/types/context.ts modified (+3/-0)
• packages/cli/test/context-service-args.test.ts added (+20/-0)
• packages/knowledge/src/index.ts modified (+13/-0)
• packages/knowledge/src/service-build.ts added (+185/-0)
• packages/knowledge/src/service-lock.ts added (+91/-0)
• packages/knowledge/src/service-runtime.ts added (+68/-0)
• packages/knowledge/src/service.ts modified (+107/-10)
• packages/knowledge/test/context-service-uat.test.ts added (+200/-0)
• packages/knowledge/test/context-service.test.ts modified (+11/-4)
• packages/knowledge/test/helpers/context-service-uat.ts added (+41/-0)
• packages/mcp/package.json modified (+1/-0)
• packages/mcp/src/handlers/context-service.ts added (+52/-0)
• packages/mcp/src/index.ts modified (+3/-0)
• packages/mcp/src/tools/register-analysis.ts modified (+11/-2)
• packages/mcp/src/tools/registry.ts modified (+3/-1)
• packages/mcp/src/tools/schemas.ts modified (+11/-0)
• ...and 3 more file(s)

Likely Impacted Areas

• Medium Build and runtime configuration (config): packages/mcp/package.json
• Low Dependency lockfile (config): pnpm-lock.yaml
• Low Documentation (docs): docs/context-service.md, packages/cli/src/docs/command-docs/orchestration.ts
• Low Source code (source): packages/cli/src/commands/context.ts, packages/cli/src/parsers/context.ts, packages/cli/src/types/context.ts, packages/knowledge/src/index.ts, packages/knowledge/src/service-build.ts, packages/knowledge/src/service-lock.ts, packages/knowledge/src/service-runtime.ts, packages/knowledge/src/service.ts, packages/mcp/src/handlers/context-service.ts, packages/mcp/src/index.ts, packages/mcp/src/tools/register-analysis.ts, packages/mcp/src/tools/registry.ts, packages/mcp/src/tools/schemas.ts, packages/mcp/src/tools/types.ts
• Low Tests (test): packages/cli/test/context-service-args.test.ts, packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/context-service.test.ts, packages/knowledge/test/helpers/context-service-uat.ts, packages/mcp/test/mcp-context-service.test.ts

Normalized Impact Graph

Graph artifact: .codedecay/local/impact-graph.json (4533 node(s), 9210 edge(s))

• Confidence: Direct: 9210, inferred: 0, heuristic: 0
• codedecay-js-babel-symbols via @babel/parser (available, adapter 1.0.0)
  • Limitation: Call expressions are not connected to target symbols in this adapter version.
  • Limitation: Only JavaScript and TypeScript files parsed by @babel/parser are represented.
  • Limitation: Static import resolution does not resolve runtime dependency injection or dynamic imports.
• codedecay-python-lezer via @lezer/python (available, adapter 1.0.0)
  • Limitation: Dynamic imports, dependency injection, decorators without literal routes, and framework route registries are not resolved.
  • Limitation: Python impact evidence uses the @lezer/python grammar and conservative module-to-file resolution.
  • Limitation: Static test imports do not prove execution or assertion quality.
• Graph limitation: A static test import does not prove the symbol executed or that assertions cover its behavior.

Symbol Impact Evidence

Graph artifact: .codedecay/local/symbol-impact-graph.json (947 file(s), 5703 edge(s))

• packages/cli/src/commands/context.ts#runContextCommand -> packages/cli/src/commands/registry.ts
• packages/cli/src/docs/command-docs/orchestration.ts#ORCHESTRATION_COMMAND_DOCS -> packages/cli/src/docs/commands.ts
• packages/cli/src/parsers/context.ts#parseContextArgs -> packages/cli/src/commands/context.ts, packages/cli/src/parsers/args.ts, packages/cli/test/context-service-args.test.ts
  • Likely tests: packages/cli/test/context-service-args.test.ts
• packages/cli/src/types/context.ts#ContextOptions -> packages/cli/src/commands/context.ts, packages/cli/src/parsers/context.ts, packages/cli/src/types.ts, packages/cli/src/types/index.ts
• packages/knowledge/src/index.ts#acquireContextServiceLock -> packages/knowledge/test/helpers/context-service-uat.ts
  • Likely tests: packages/knowledge/test/helpers/context-service-uat.ts
• packages/knowledge/src/index.ts#createDefaultContextServiceBuild -> packages/knowledge/test/helpers/context-service-uat.ts
  • Likely tests: packages/knowledge/test/helpers/context-service-uat.ts
• packages/knowledge/src/index.ts#getOrCreateContextService -> packages/cli/src/commands/context.ts, packages/knowledge/test/helpers/context-service-uat.ts, packages/mcp/src/handlers/context-service.ts
  • Likely tests: packages/knowledge/test/helpers/context-service-uat.ts
• packages/knowledge/src/index.ts#startContextService -> packages/cli/src/commands/context.ts, packages/mcp/src/handlers/context-service.ts
• packages/knowledge/src/index.ts#stopContextService -> packages/cli/src/commands/context.ts
• packages/knowledge/src/index.ts#writeContextServiceMarker -> packages/cli/src/commands/context.ts, packages/mcp/src/handlers/context-service.ts
• packages/knowledge/src/service-build.ts#ContextServiceBuildMode -> packages/knowledge/src/index.ts
• packages/knowledge/src/service-build.ts#ContextServiceBuildStats -> packages/knowledge/src/index.ts, packages/knowledge/src/service.ts
• ...and 24 more symbol impact(s)

Language And Parser Coverage

• Source files classified: 20
• Fully supported parser files: 20
• Limited files: 0
• Unsupported files: 0

Merge Risk Breakdown

• Score: 100/100
• Raw score before dampeners: 100/100
• Adjusted score before severity cap: 100/100
• Highest contributing severity: High

Top contributors:

• +18 Change size (structural): Changed lines amplify review cost across 23 file(s).
• +18 Test appears to copy implementation logic (heuristic): packages/knowledge/test/context-service-uat.test.ts:24-26 matches executable logic from packages/knowledge/src/service-runtime.ts:17-19: const builder = createDefaultContextServiceBuild(); | const service = new LocalContextService({ | rootDir,. This can make tests pass without protecting real behavior.
• +18 Test appears to copy implementation logic (heuristic): packages/knowledge/test/helpers/context-service-uat.ts:24-27 matches executable logic from packages/mcp/src/handlers/context-service.ts:32-36: await service.rebuild(""); | if (operation === "") { | await service.rebuild("");. This can make tests pass without protecting real behavior.
• +16 Config area changed (direct): packages/mcp/package.json touches a config area and should be reviewed for regression impact.
• +12 File spread (structural): Change breadth spans 23 file(s).

Notes:

• Untrusted memory context is visible but contributes 0 score until trusted evidence corroborates it.

Decay Risk Breakdown

• Score: 54/100
• Raw score before dampeners: 83/100
• Adjusted score before severity cap: 67/100
• Highest contributing severity: High
• Evidence mode: heuristic-only

Top contributors:

• +18 Broad unrelated change set (heuristic): This PR changes 20 files across 1 top-level areas and 3 risk categories.
• +10 High complexity in changed function (heuristic): runContextServiceCommand has estimated cyclomatic complexity 13.
• +10 High complexity in changed function (heuristic): parseContextArgs has estimated cyclomatic complexity 14.
• +10 High complexity in changed function (heuristic): createDefaultContextServiceBuild has estimated cyclomatic complexity 17.
• +10 High complexity in changed function (heuristic): build has estimated cyclomatic complexity 17.

Dampeners:

• -16 Heuristic-only dampener: Decay stays conservative until direct evidence exists.

Notes:

• Heuristic-only decay is capped at 54/100 until direct evidence exists.

Security Risk Breakdown

• Score: 0/100
• Raw score before dampeners: 0/100
• Adjusted score before severity cap: 0/100

Security Matcher Coverage

• Changed source files scanned: 15
• Security candidates found: 0
• Skipped files: 0

Test Evidence

• Mode: heuristic-only
• Sources: none
• Changed source coverage:
• packages/cli/src/commands/context.ts: not measured (no measurable changed lines)
• packages/cli/src/docs/command-docs/orchestration.ts: not measured (no measurable changed lines)
• packages/cli/src/parsers/context.ts: not measured (no measurable changed lines)
• packages/cli/src/types/context.ts: not measured (no measurable changed lines)
• packages/knowledge/src/index.ts: not measured (no measurable changed lines)
• packages/knowledge/src/service-build.ts: not measured (no measurable changed lines)
• packages/knowledge/src/service-lock.ts: not measured (no measurable changed lines)
• packages/knowledge/src/service-runtime.ts: not measured (no measurable changed lines)
• Notes:
• No runtime coverage artifact was found. Test audit remains heuristic-only.

Changed Path Test Proof

Status	Count
Runtime-proven	0
Static-only	19
Weakened by mocks	0
Unproven	17

• Static-only packages/cli/src/commands/context.ts#runContextCommand (static-reference, deterministic)
  • Evidence: Referenced by packages/cli/test/context-service-args.test.ts, packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/context-service.test.ts, but no runtime coverage artifact proves changed lines executed.
  • Static references: packages/cli/test/context-service-args.test.ts, packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/context-service.test.ts
  • Repair task: Strengthen packages/cli/test/context-service-args.test.ts so it executes packages/cli/src/commands/context.ts#runContextCommand with assertions; static import alone is not proof.
• Unproven packages/cli/src/docs/command-docs/orchestration.ts#ORCHESTRATION_COMMAND_DOCS (missing-proof, heuristic)
  • Evidence: No runtime coverage or static test reference was found for this changed path.
  • Repair task: Add an integration test that reaches packages/cli/src/docs/command-docs/orchestration.ts#ORCHESTRATION_COMMAND_DOCS without mocking the changed boundary.
• Static-only packages/cli/src/parsers/context.ts#parseContextArgs (static-reference, deterministic)
  • Evidence: Referenced by packages/cli/test/context-service-args.test.ts, packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/context-service.test.ts, but no runtime coverage artifact proves changed lines executed.
  • Static references: packages/cli/test/context-service-args.test.ts, packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/context-service.test.ts
  • Repair task: Strengthen packages/cli/test/context-service-args.test.ts so it executes packages/cli/src/parsers/context.ts#parseContextArgs with assertions; static import alone is not proof.
• Static-only packages/cli/src/types/context.ts#ContextOptions (static-reference, deterministic)
  • Evidence: Referenced by packages/cli/test/context-service-args.test.ts, packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/context-service.test.ts, but no runtime coverage artifact proves changed lines executed.
  • Static references: packages/cli/test/context-service-args.test.ts, packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/context-service.test.ts
  • Repair task: Strengthen packages/cli/test/context-service-args.test.ts so it executes packages/cli/src/types/context.ts#ContextOptions with assertions; static import alone is not proof.
• Static-only packages/knowledge/src/index.ts#acquireContextServiceLock (static-reference, deterministic)
  • Evidence: Referenced by packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/helpers/context-service-uat.ts, packages/mcp/test/mcp-context-service.test.ts, but no runtime coverage artifact proves changed lines executed.
  • Static references: packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/helpers/context-service-uat.ts, packages/mcp/test/mcp-context-service.test.ts
  • Repair task: Strengthen packages/knowledge/test/context-service-uat.test.ts so it executes packages/knowledge/src/index.ts#acquireContextServiceLock with assertions; static import alone is not proof.
• Static-only packages/knowledge/src/index.ts#createDefaultContextServiceBuild (static-reference, deterministic)
  • Evidence: Referenced by packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/helpers/context-service-uat.ts, packages/mcp/test/mcp-context-service.test.ts, but no runtime coverage artifact proves changed lines executed.
  • Static references: packages/knowledge/test/context-service-uat.test.ts, packages/knowledge/test/helpers/context-service-uat.ts, packages/mcp/test/mcp-context-service.test.ts
  • Repair task: Strengthen packages/knowledge/test/context-service-uat.test.ts so it executes packages/knowledge/src/index.ts#createDefaultContextServiceBuild with assertions; static import alone is not proof.
• Static-only packages/knowledge/src/index.ts#getOrCreateContextService (static-reference, deterministic)
  • Evidence: Referenced by packages/knowledge/test/helpers/context-service-uat.ts, packages/mcp/test/mcp-context-service.test.ts, but no runtime coverage artifact proves changed lines executed.
  • Static references: packages/knowledge/test/helpers/context-service-uat.ts, packages/mcp/test/mcp-context-service.test.ts
  • Repair task: Strengthen packages/knowledge/test/helpers/context-service-uat.ts so it executes packages/knowledge/src/index.ts#getOrCreateContextService with assertions; static import alone is not proof.
• Static-only packages/knowledge/src/index.ts#startContextService (static-reference, deterministic)
  • Evidence: Referenced by packages/mcp/test/mcp-context-service.test.ts, but no runtime coverage artifact proves changed lines executed.
  • Static references: packages/mcp/test/mcp-context-service.test.ts
  • Repair task: Strengthen packages/mcp/test/mcp-context-service.test.ts so it executes packages/knowledge/src/index.ts#startContextService with assertions; static import alone is not proof.
• ...and 28 more changed path proof entries

Untrusted Memory Context

• Project invariant may be impacted (packages/cli/src/commands/context.ts:9): Untrusted memory context: invariant "No hidden cloud or model call" applies to this change. The OSS CLI must remain useful without telemetry, API keys, hosted services, required LLM calls, or CodeDecayCloud.
• Project invariant may be impacted (packages/cli/src/commands/context.ts:9): Untrusted memory context: invariant "Commands are explicit" applies to this change. CodeDecay must not run project commands unless they are configured and safety.allowCommands is true.
• Project invariant may be impacted (docs/context-service.md:13): Untrusted memory context: invariant "Tool evidence is separate from AI suggestions" applies to this change. Reports must not present agent/model suggestions as verified evidence unless backed by deterministic checks or command output.
• Project invariant may be impacted (packages/mcp/package.json:23): Untrusted memory context: invariant "Package remains installable from npm" applies to this change. The published package must include README, LICENSE, package.json, dist/index.js, and dist/index.d.ts without workspace-only dependency leaks.
• Past regression area changed (packages/mcp/package.json:23): Untrusted memory context: past regression "Published npm package leaked workspace protocol" may be relevant. Published package installation failed when workspace protocol dependencies leaked into the npm package.
• Project invariant may be impacted (docs/context-service.md:13): Untrusted memory context: invariant "Output must be actionable" applies to this change. Redteam reports and agent bundles should say what behavior to verify, which test proof is weak or missing, and what task a coding agent should perform.
• Architecture note applies (packages/cli/src/commands/context.ts:9): Untrusted architecture context: CLI is the published surface: The public npm package is @submuxhq/codedecay and the binary is codedecay. Internal workspace packages are implementation details.
• Architecture note applies (packages/mcp/package.json:23): Untrusted architecture context: Agent-owned workflow: CodeDecay should produce evidence and task bundles that a user's own Codex, Claude Code, Cursor, OpenCode, Pi, desktop app, or MCP client can use.

High Risk Findings

• Broad unrelated change set: This PR changes 20 files across 1 top-level areas and 3 risk categories.
• Test appears to copy implementation logic (packages/knowledge/test/context-service-uat.test.ts:24): packages/knowledge/test/context-service-uat.test.ts:24-26 matches executable logic from packages/knowledge/src/service-runtime.ts:17-19: const builder = createDefaultContextServiceBuild(); | const service = new LocalContextService({ | rootDir,. This can make tests pass without protecting real behavior.
• Test appears to copy implementation logic (packages/knowledge/test/helpers/context-service-uat.ts:24): packages/knowledge/test/helpers/context-service-uat.ts:24-27 matches executable logic from packages/mcp/src/handlers/context-service.ts:32-36: await service.rebuild(""); | if (operation === "") { | await service.rebuild("");. This can make tests pass without protecting real behavior.

Medium Risk Findings

• High complexity in changed function (packages/cli/src/commands/context.ts:84): runContextServiceCommand has estimated cyclomatic complexity 13.
• High complexity in changed function (packages/cli/src/parsers/context.ts:5): parseContextArgs has estimated cyclomatic complexity 14.
• High complexity in changed function (packages/knowledge/src/service-build.ts:29): createDefaultContextServiceBuild has estimated cyclomatic complexity 17.
• High complexity in changed function (packages/knowledge/src/service-build.ts:40): build has estimated cyclomatic complexity 17.
• Large changed function (packages/mcp/src/tools/register-analysis.ts:33): registerAnalysisMcpTools spans 127 lines, which increases review and regression risk.
• Config area changed (packages/mcp/package.json:23): packages/mcp/package.json touches a config area and should be reviewed for regression impact.

Low Risk Findings

• Config area changed (pnpm-lock.yaml:202): pnpm-lock.yaml touches a config area and should be reviewed for regression impact.
• Docs area changed (docs/context-service.md:13): docs/context-service.md touches a docs area and should be reviewed for regression impact.
• Docs area changed (packages/cli/src/docs/command-docs/orchestration.ts:45): packages/cli/src/docs/command-docs/orchestration.ts touches a docs area and should be reviewed for regression impact.
• Source area changed (packages/cli/src/commands/context.ts:9): packages/cli/src/commands/context.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/cli/src/parsers/context.ts:10): packages/cli/src/parsers/context.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/cli/src/types/context.ts:12): packages/cli/src/types/context.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/knowledge/src/index.ts:33): packages/knowledge/src/index.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/knowledge/src/service-build.ts:1): packages/knowledge/src/service-build.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/knowledge/src/service-lock.ts:1): packages/knowledge/src/service-lock.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/knowledge/src/service-runtime.ts:1): packages/knowledge/src/service-runtime.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/knowledge/src/service.ts:7): packages/knowledge/src/service.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/mcp/src/handlers/context-service.ts:1): packages/mcp/src/handlers/context-service.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/mcp/src/index.ts:30): packages/mcp/src/index.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/mcp/src/tools/register-analysis.ts:14): packages/mcp/src/tools/register-analysis.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/mcp/src/tools/registry.ts:21): packages/mcp/src/tools/registry.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/mcp/src/tools/schemas.ts:107): packages/mcp/src/tools/schemas.ts touches a source area and should be reviewed for regression impact.
• Source area changed (packages/mcp/src/tools/types.ts:40): packages/mcp/src/tools/types.ts touches a source area and should be reviewed for regression impact.
• Test area changed (packages/cli/test/context-service-args.test.ts:1): packages/cli/test/context-service-args.test.ts touches a test area and should be reviewed for regression impact.
• Test area changed (packages/knowledge/test/context-service-uat.test.ts:1): packages/knowledge/test/context-service-uat.test.ts touches a test area and should be reviewed for regression impact.
• Test area changed (packages/knowledge/test/context-service.test.ts:26): packages/knowledge/test/context-service.test.ts touches a test area and should be reviewed for regression impact.
• Test area changed (packages/knowledge/test/helpers/context-service-uat.ts:1): packages/knowledge/test/helpers/context-service-uat.ts touches a test area and should be reviewed for regression impact.
• Test area changed (packages/mcp/test/mcp-context-service.test.ts:1): packages/mcp/test/mcp-context-service.test.ts touches a test area and should be reviewed for regression impact.

Recommended Checks

• Add an integration test that reaches packages/cli/src/docs/command-docs/orchestration.ts#ORCHESTRATION_COMMAND_DOCS without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-build.ts#ContextServiceBuildMode without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-build.ts#ContextServiceBuildStats without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-build.ts#DefaultContextServiceBuild without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-lock.ts#CONTEXT_SERVICE_LOCK_PATH without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-lock.ts#ContextServiceLockHandle without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-runtime.ts#clearContextServiceMarker without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-runtime.ts#getContextService without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-runtime.ts#readContextServiceMarker without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-runtime.ts#startContextService without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-runtime.ts#stopContextService without mocking the changed boundary.
• Add an integration test that reaches packages/knowledge/src/service-runtime.ts#writeContextServiceMarker without mocking the changed boundary.

Notes

CodeDecay is deterministic and local-first. This report was generated without telemetry, API keys, LLMs, or model calls.

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Found by CodeDecay - deterministic, local-first, no telemetry.