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chore(metrics): remove in-repo internal design docs#73003

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DanielVisca merged 3 commits into
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posthog-code/remove-metrics-internal-design-docs
Jul 22, 2026
Merged

chore(metrics): remove in-repo internal design docs#73003
DanielVisca merged 3 commits into
masterfrom
posthog-code/remove-metrics-internal-design-docs

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@DanielVisca

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Problem

The metrics product had two internal design docs checked into the repo at docs/internal/metrics/:

  • dashboard-mvp.md
  • deployment-layout.md

These are point-in-time design and planning artifacts, not durable references. They carry a **Status:** design header, owner handles, an alpha-timeline framing, in-flight PR references, and status matrices that go stale the moment the work moves. One of them even links to a sibling docs/internal/prom-compat/design.md that does not exist in the repo.

I checked precedent before removing anything. docs/internal/ does host other per-product folders (feature-flags/, workflows/), but those are durable "how it works" architecture references describing shipped systems, which is also what docs/README.md scopes internal/ to (development workflows, migration patterns, team processes). Transient design/planning docs are a different kind of thing and don't have strong precedent here. Nothing in the codebase references either file.

Changes

Deleted both files. That empties docs/internal/metrics/, so the directory goes away too. No code, docs index, or agent instructions link to them, so nothing else changes.

How did you test this code?

Doc-only deletion, no runtime behavior to test. I grepped the repo (code, markdown, agent instruction files, doc indexes) for inbound references to the two files and the internal/metrics path and found none, so removal leaves no broken links.

Automatic notifications

  • Publish to changelog?
  • Alert Sales and Marketing teams?

Docs update

N/A

🤖 Agent context

Autonomy: Human-driven (agent-assisted)

Daniel asked whether keeping these in-repo metrics design docs is standard practice and, if there's no strong precedent, to remove them. I (Claude) checked the other docs/internal/ folders and docs/README.md to characterize what belongs there, confirmed the metrics docs are transient planning artifacts rather than durable architecture references, verified nothing links to them, then deleted both. No skills were required for a doc-only deletion.


Created with PostHog Code

Delete docs/internal/metrics/dashboard-mvp.md and deployment-layout.md.

These are point-in-time design/planning artifacts (status fields, in-flight PR
references, status matrices, deadlines) rather than durable architecture
references. Nothing in the repo links to them, and one points to a sibling
doc that does not exist.

Generated-By: PostHog Code
Task-Id: 2bbfdaa6-874f-4759-952a-30409e069fec
@trunk-io

trunk-io Bot commented Jul 22, 2026

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😎 This pull request was merged.

@DanielVisca DanielVisca added the skip-agent-review Save $$$, skip auto agent reviews (Greptile) — use for trivial or chore PRs label Jul 22, 2026 — with PostHog
@DanielVisca DanielVisca self-assigned this Jul 22, 2026
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Hey @DanielVisca! 👋

It looks like your git author email on this PR isn't your @posthog.com address (danielvisca96@gmail.com). Since you're on the PostHog team, it's worth pointing your local git author email at your @posthog.com address. Why it matters:

  • Consistent work identity in git history — internal tooling that attributes commits to team members keys off your @posthog.com address.
  • Keeps team contributions easy to tell apart from external community ones when scanning history.

You can fix it for this repo with:

git config user.email "you@posthog.com"

Or set it globally with git config --global user.email "you@posthog.com". No need to redo this PR — just a nudge for next time. 🙂

@github-actions

github-actions Bot commented Jul 22, 2026

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🤖 CI report

Playwright — all passed

All tests passed.

View test results →

⚠️ Backend snapshots — 11 updated (11 modified, 0 added, 0 deleted)

Query snapshots: Backend query snapshots updated

Changes: 11 snapshots (11 modified, 0 added, 0 deleted)

What this means:

  • Query snapshots have been automatically updated to match current output
  • These changes reflect modifications to database queries or schema

Next steps:

  • Review the query changes to ensure they're intentional
  • If unexpected, investigate what caused the query to change

Review snapshot changes →

ℹ️ Docs preview — preview build triggered

Docs from this PR will be published at posthog.com.

Project Preview Updated (UTC)
posthog.com Open preview Jul 22, 2026, 9:55 PM

The preview should be ready in about 10 minutes. Open the preview at /handbook/engineering/.

@DanielVisca
DanielVisca marked this pull request as ready for review July 22, 2026 20:38
@greptile-apps

greptile-apps Bot commented Jul 22, 2026

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Comments Outside Diff (1)

  1. docs/internal/metrics/dashboard-mvp.md

    P2 Deleted Directory Remains Referenced

    Deleting the last files under docs/internal/metrics breaks the reference in posthog/clickhouse/metrics/metric_events.py:20, which directs developers there for the history of the stored-map MV behavior. Following that debugging guidance now leads to a nonexistent path, so the source comment should be removed or updated to the new location.

    Prompt To Fix With AI
    This is a comment left during a code review.
    Path: docs/internal/metrics/dashboard-mvp.md
    Line: 1
    
    Comment:
    **Deleted Directory Remains Referenced**
    
    Deleting the last files under `docs/internal/metrics` breaks the reference in `posthog/clickhouse/metrics/metric_events.py:20`, which directs developers there for the history of the stored-map MV behavior. Following that debugging guidance now leads to a nonexistent path, so the source comment should be removed or updated to the new location.
    
    How can I resolve this? If you propose a fix, please make it concise.
Prompt To Fix All With AI
Fix the following 1 code review issue. Work through them one at a time, proposing concise fixes.

---

### Issue 1 of 1
docs/internal/metrics/dashboard-mvp.md:1
**Deleted Directory Remains Referenced**

Deleting the last files under `docs/internal/metrics` breaks the reference in `posthog/clickhouse/metrics/metric_events.py:20`, which directs developers there for the history of the stored-map MV behavior. Following that debugging guidance now leads to a nonexistent path, so the source comment should be removed or updated to the new location.

Reviews (1): Last reviewed commit: "chore(metrics): remove in-repo internal ..." | Re-trigger Greptile

@DanielVisca DanielVisca added the stamphog Request AI approval (no full review) label Jul 22, 2026
@DanielVisca
DanielVisca enabled auto-merge (squash) July 22, 2026 20:43
@stamphog

stamphog Bot commented Jul 22, 2026

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Note

🤖 stamphog reviewed 2715909d707f99da1a2f80b55be83dcefcde7aff — verdict: ESCALATE

Greptile's concern is confirmed by reading the source: posthog/clickhouse/metrics/metric_events.py:20 explicitly points readers to docs/internal/metrics for context, and this PR deletes that directory entirely without updating the comment, leaving a dangling reference the author's own grep should have caught.

  • 👍 on the PR from greptile-apps[bot], hex-security-app[bot].
  • Deletes docs/internal/metrics/ while posthog/clickhouse/metrics/metric_events.py:20 still says 'See docs/internal/metrics for the history' — an unaddressed, confirmed bot review comment (greptile-apps[bot]) pointing at a real dangling reference.
Gate mechanics and policy version
Gate Result
prerequisites all clear
deny-list no deny categories matched
size 0L, 0F substantive, 280L/2F incl. docs/generated/snapshots — within ceiling
tier T0 auto-approve: T0-deterministic (280L, 2F, single-area, chore)
stamphog 2.0.0b3 .stamphog/policy.yml @ 90ffad8 · reviewed head 2715909

@stamphog stamphog Bot removed the stamphog Request AI approval (no full review) label Jul 22, 2026
The design docs deleted in this PR were the target of a "See
docs/internal/metrics for the history" pointer in metric_events.py. The
comment above it already explains the fingerprint/dedup design, so remove the
now-dangling reference rather than repoint it.

Generated-By: PostHog Code
Task-Id: 2bbfdaa6-874f-4759-952a-30409e069fec
@DanielVisca DanielVisca added the stamphog Request AI approval (no full review) label Jul 22, 2026

@stamphog stamphog Bot left a comment

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Doc-only deletion plus a one-line comment edit removing the now-dangling reference to the deleted docs — the diff already addresses Greptile's flagged concern about the broken path. No risky territory, author has strong familiarity with these exact files.

  • Author wrote 100% of the modified lines and has 7 merged PRs in these paths (familiarity STRONG).
  • 👍 on the PR from greptile-apps[bot], hex-security-app[bot].
Gate mechanics and policy version
Gate Result
prerequisites all clear
deny-list no deny categories matched
size 2L, 1F substantive, 282L/3F incl. docs/generated/snapshots — within ceiling
tier T1-agent / T1c-medium (282L, 3F, two-areas, chore)
stamphog 2.0.0b3 .stamphog/policy.yml @ 2f27722 · reviewed head d758108

@tests-posthog
tests-posthog Bot disabled auto-merge July 22, 2026 21:55
@stamphog

stamphog Bot commented Jul 22, 2026

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Retaining stamphog approval — delta since last review classified as trivial_paths.

@DanielVisca
DanielVisca merged commit 53b7152 into master Jul 22, 2026
247 checks passed
@DanielVisca
DanielVisca deleted the posthog-code/remove-metrics-internal-design-docs branch July 22, 2026 22:39
@deployment-status-posthog

deployment-status-posthog Bot commented Jul 22, 2026

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Deploy status

Environment Status Deployed At Workflow
dev ✅ Deployed 2026-07-22 23:16 UTC Run
prod-us ✅ Deployed 2026-07-22 23:30 UTC Run
prod-eu ✅ Deployed 2026-07-22 23:30 UTC Run

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