docs: retro for the documentation transports and Brotli dictionary work - #1738
docs: retro for the documentation transports and Brotli dictionary work#1738davidschachterADFA wants to merge 5 commits into
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Four independent reviews of PRs already reported as verified each found a real defect in them. The retrospective records what the two recurring shapes were -- fixing the instance in front of me rather than the class, and claims outrunning their checks -- and turns them into rules rather than resolutions. CLAUDE.md gains a "Verify before you claim" section (sweep the sibling sites, prove the regression test fails without the fix, match the handler to the failure, check every claim), a rule against `git add -A` in a repo whose test runs rewrite tracked fixtures, a rule that long commands are backgrounded and narrated rather than run silently, and a rule that a recommendation carries its own why. The last two come from the user's feedback: a silent multi-minute Spotless run was indistinguishable from a hang, and recommendations given as bare conclusions cost a round-trip to unpack. ADFA-5265 covers the Spotless cost itself. learnings.md gains four entries: the pre-push hook's double Spotless cost, the APPROVED badge not meaning the current code was approved, connectedAndroidTest's bouncycastle failure with the adb/am instrument workaround, and the tracked gradle-sync fixtures that a test run rewrites. Not done, deliberately: the reviewer-side revert check in REVIEW.md and dismissing stale approvals on stage. Both change artifacts other people rely on. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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WalkthroughThe PR adds contributor workflow guidance, process learnings, and an August 24, 2026 retrospective. The documentation covers command execution, verification, staging, Spotless, approvals, Android tests, tracked fixtures, metrics, and follow-up actions. ChangesProcess Documentation
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Inline comments:
In `@CLAUDE.md`:
- Around line 111-114: Update the “Staging commits — no git add -A” guidance to
distinguish the commands: state that git add -A stages tracked and untracked
changes, while git add -u stages only modifications and deletions to tracked
paths. Keep both commands prohibited and retain the recommendation to stage by
explicit path after checking git status --short.
- Line 21: Update the long-running command guidance to keep worktree-mutating
commands such as spotlessApply and git push in the foreground, or require
completion before any other edits, staging, or commits; retain background
execution only for non-mutating commands.
In `@docs/process/learnings.md`:
- Line 10: Update the documentation guidance to compare the approving review’s
commit.oid from reviews with the PR headRefOid, rather than relying on approval
timestamps or latestReviews, whose commit.oid may be empty.
In `@docs/process/retrospective.md`:
- Around line 5-6: Update the Markdown in the retrospective document by adding
blank lines between each table heading and its table, and add a blank line after
the Metrics table before the caveat. Preserve all table content and surrounding
text.
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CLAUDE.mddocs/process/learnings.mddocs/process/retrospective.md
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The backgrounding rule I wrote from the retro collides with the thing it was about. spotlessApply writes to the worktree, and git push runs it through the hook, so backgrounding either races any edit or staging that happens while it is in flight. The rule now separates the two: narrate every long command, but background only the ones that do not write to the worktree -- builds, test runs, spotlessCheck. spotlessApply and git push stay in the foreground with the wait narrated. That is the same partial-application shape the retro is about: a real problem, a fix that covered most of it. Two corrections of fact. `git add -u` does not stage untracked files -- it is tracked paths and deletions -- so grouping it with `git add -A` as sweeping in "whatever else" was wrong; the section now states each one's actual scope and keeps the warning that -u still picks up a tracked file something rewrote behind your back, which is exactly what happened here. And the stale-approval check should compare the approving review's commit.oid with headRefOid rather than timestamps, since latestReviews can return an empty commit.oid. Blank lines around the retro tables for MD058. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
I wrote that Spotless costs ~4.5 minutes and that :spotlessShell accounts for nearly all of it by walking scripts/**. Both are wrong, and the rule I had just written -- every claim needs its check -- is what says to measure before repeating them. Measured on this repo, warm daemon: spotlessCheck 6.5s total, of which :spotlessShell is 750ms, :spotlessKotlin 4.4s, :spotlessXml 2.7s. Cold: spotlessCheck 22s, against 20s for `gradlew help` -- so essentially all of a cold run is daemon start plus configuring this many modules, and Spotless adds ~2s. scripts/ and .githooks together are 38 files; there is no walk to prune. The 4.5 minutes I measured earlier was real but misattributed: at that point the machine was carrying two Gradle daemons, a Kotlin daemon and an orphaned test JVM holding 830 MB, with a daemon having already been OOM-killed that session. What survives is the pre-push double cost -- the hook runs spotlessApply, and if it changes anything the push fails and you pay the invocation twice -- and the narration rule, which is about any long command rather than about Spotless. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Both said the tracked-fixture hazard is live. ADFA-5264 (#1740) merged to stage in the meantime and ignores testing/resources/test-project/.cg/ entirely, so nothing under it is tracked any more. The learnings entry now records what happened and the shape worth remembering -- a tracked file a test run rewrites cannot be kept clean by discipline, only by untracking it -- in past tense. CLAUDE.md's git-add-A rule stands on its own; only its justification needed replacing. The untracked half of the risk is still live, and tests/ is the current example: :gradle-plugin:test leaves files there and tests/test-home is not ignored on stage today. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01M4sTwYg47aK8VB9kRKZicU
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Reviewed at xhigh. Doc-only, and the substance is sound — the learnings are specific enough to act on and each one names the ticket that produced it. One fix pushed in Both said the tracked-fixture hazard is live. ADFA-5264 (#1740) merged to CLAUDE.md's Two things worth noting, no change made:
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Brings in ADFA-5264 (#1740), whose merge is what made two claims in this retro stale -- corrected in 8cfc586. No conflicts; with stage in, the diff is the three documents this PR is about. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01M4sTwYg47aK8VB9kRKZicU
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Merged Worth noting what the merge brought in: ADFA-5264 (#1740) is the change that made two of this retro's claims stale — the fix is |
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Retrospective for the stretch covering the documentation transports (ADFA-5176/5241), the Brotli dictionary migration (ADFA-5153), the version table (ADFA-5220), and 24 review threads across seven PRs.
What prompted the rules
Four independent code reviews of PRs I had already reported as verified each found a real defect: a security fix that sanitised a
Content-Type's media type but not its parameters, so CR/LF injection still worked; a test suite whose every expectation sat on one boundary, so aMIN()stub would have passed it; a shutdown guard applied to two of three entry points; acatch (Exception)that misses theErrorthe PR existed to handle; and 12 MB of machine-local fixtures swept in bygit add -A.Two shapes recur, and both are now rules rather than resolutions:
UPDATEbeside theINSERT, the third entry point, the parameters beside the type).CLAUDE.md
git push, which runs Spotless through the hook and is therefore itself a multi-minute silent command.git add -A; this repo has tracked fixtures that a test run rewrites.The last two come straight from the user's feedback in the retro: a silent Spotless run was indistinguishable from a hang, and bare recommendations cost a round-trip to unpack.
learnings.md
The pre-push hook's double Spotless cost; an
APPROVEDbadge not meaning the current code was approved (this repo does not dismiss stale reviews, and five PRs were in that state at once);connectedAndroidTest's bouncycastle failure with theadb install+am instrumentworkaround; and the trackedgradle-syncfixtures a test run rewrites.Deliberately not done
The reviewer-side revert check in REVIEW.md §5, and enabling "dismiss stale approvals" on
stage. Both change artifacts other people rely on, so they are raised here rather than applied — say the word and I will add them.Related: ADFA-5265 (Spotless takes 4.5 min per push, double when the hook trips), ADFA-5258 (
connectedAndroidTestbroken), ADFA-5264 (test runs rewrite tracked fixtures).