Refactor Checkpoint Policy Write-Guard Semantics · Entire

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Session summary: Remove checkpoint_version from checkpoint metadata

Goal: Remove the CheckpointVersion property from checkpoint metadata.json and the gates that check it. Existing checkpoints will be handled by an external migration script, so no backward-compat handling for the stored attribute is needed.

Scope decision (after investigation): The version machinery has three parts: (A) the checkpoint_version stamp in metadata.json — a pure label nothing dispatches on (backend selection comes from settings topology, not the stamp), (B) the EnsureCanReadVersion read gates at resume/explain/rewind/export — forward-compat tripwires that can only fire for hypothetical future formats, and (C) the checkpointpolicy subsystem (policy ref at refs/entire/policies/checkpoint, hidden entire checkpoint policy command, write gates, telemetry). Agreed scope: remove A + B only; C stays untouched. Existing policy refs are left alone.

Approved plan: step-by-step execution, two commits:

  1. remove checkpoint_version read gates
  2. drop checkpoint_version from checkpoint metadata

(Gates must go first — they read the field being removed in commit 2.)

Step 1 — done, awaiting review/commit approval:

Next steps: Commit Step 1 on approval, then Step 2: remove WriteOptions.CheckpointVersion and CheckpointSummary.CheckpointVersion (api/checkpoint/metadata.go), the stamping plumbing in checkpoint/persistent.go / refs_store.go / manual_commit_condensation.go, normalizeCheckpointSummary, checkpointVersionForNewCheckpoint (attach.go switches to ensureCheckpointPolicyAllowsCheckpointData to keep the write gate), the now-unused CheckpointVersionRefsV1 constant, associated tests, and the metadata.json doc example. Plan file: ~/.claude/plans/abstract-splashing-lemon.md.

2w ago·17.4s

Step 1 is complete and ready for your review — here's the checkpoint summary.

Step 1: remove checkpoint_version read gates

Verification (all from this step, nothing changed since): go build ./... clean, focused tests in the cli, checkpointpolicy, and strategy packages pass, and mise run fmt && mise run lint reported 0 issues.

One thing worth calling out from the diff: the dropped redundant ReadCheckpoint calls are a small behavior simplification, not just gate removal — the reads were gate-feeders only, so nothing downstream loses data.

On your approval I'll commit this as remove checkpoint_version read gates, then start Step 2 (dropping the checkpoint_version stamp from metadata writes: WriteOptions.CheckpointVersion, CheckpointSummary.CheckpointVersion, the stamping plumbing, normalizeCheckpointSummary, checkpointVersionForNewCheckpoint, the unused constant, tests, and the doc example).

commit the changes

2w ago·1m·2 calls

Committed as bc49bc896b — remove checkpoint_version read gates (11 files, 4 insertions, 359 deletions).

Ready to start Step 2 when you say go: dropping the checkpoint_version stamp itself from metadata writes (WriteOptions.CheckpointVersion, CheckpointSummary.CheckpointVersion, the stamping plumbing in checkpoint/persistent.go / refs_store.go / manual_commit_condensation.go, normalizeCheckpointSummary, checkpointVersionForNewCheckpoint, the unused constant, associated tests, and the metadata.json doc example).

Is there anything else that's missing here?

2w ago·1m·7 calls

Step 1 missed nothing, and Step 2's plan is nearly complete — the sweep found two small additions to fold into Step 2, plus confirmation that everything else remaining is the policy subsystem we agreed to leave alone.

Additions for Step 2:

  1. cmd/entire/cli/checkpoint/aliases.go:57-58 — the re-exported CheckpointVersionRefsV1 alias has to go along with the underlying constant in api/checkpoint/errors.go. (The CheckpointVersionBranchV1 constant and its alias must stay — the policy subsystem uses it heavily as the default policy version in checkpointpolicy/policy.go.)
  2. Doc paragraph, not just the example — in sessions-and-checkpoints.md, the checkpoint metadata example (line 254) is planned, but the Checkpoint Policy section's prose (lines 323-329) says checkpoint_version "selects the checkpoint format for new writes" and that "the CLI writes its default checkpoint version." After Step 2 nothing is written — the policy field becomes purely a write gate (writers fail if the configured version is unsupported, which ensureCheckpointPolicyAllowsCheckpointData keeps enforcing). That paragraph needs a light rewording, not removal. The policy file example at line 311 stays as-is — that's the policy's own field, not the metadata stamp.

Confirmed in-plan:normalizeCheckpointSummary lives in checkpoint/persistent_reader.go (its only job is backfilling the version default, so file and both call sites in persistent.go go away), and the version-asserting tests are in persistent_write_test.go, persistent_update_test.go, refs_store_test.go, refs_store_seam_test.go, and persistent_tripwire_test.go.

Confirmed out of scope (policy subsystem, stays):hook_registry.go, hooks_git_cmd.go, import_cmd.go's help text, and everything under checkpointpolicy/ — those all reference the policy'sCheckpointVersion field, not the metadata stamp. attach.go switching from checkpointVersionForNewCheckpoint to ensureCheckpointPolicyAllowsCheckpointData matches the existing pattern in explain.go:701 and import_cmd.go:59, after which checkpointVersionForNewCheckpoint is deleted.

Say the word and I'll execute Step 2 with these two additions folded in.

Do it

2w ago·10m·65 calls

Step 2: drop checkpoint_version from checkpoint metadata — ready for review, 32 insertions / 302 deletions across 15 files.

What changed:

One diff note: attach.go shows more changed lines than the logical edit because removing CheckpointVersion (the longest field name) made gofmt realign the whole writeOpts struct literal.

Verification: go build ./... clean; go test -count=1 passes on api/checkpoint, all cmd/entire/cli/checkpoint/... packages, strategy, and cli; mise run fmt && mise run lint → 0 issues on the formatted tree. A leftover-reference sweep finds only the policy subsystem's own CheckpointVersion fields, which are intentionally untouched.

On approval I'll commit as drop checkpoint_version from checkpoint metadata, which completes the planned work.

I'm assuming CheckpointVersionBranchV1 is still used for the other policy decisions, like setting checkpoint version via a policy, correct?

2w ago·26.5s·1 call

Correct. CheckpointVersionBranchV1 remains the anchor value for the whole policy subsystem — that's exactly why it stayed while CheckpointVersionRefsV1 was deleted. In checkpointpolicy/policy.go it feeds:

So entire checkpoint policy --checkpoint-version ... still works end to end: the value is parsed via ParseFormat, validated against CanWrite, stored in the policy ref, and enforced as a write gate on every checkpoint-data writer. The only thing that changed is what happens after the gate passes — the resolved version used to also be stamped into each checkpoint's metadata.json, and now it isn't consumed for anything beyond the gate decision. That matches the doc rewording in Step 2: the policy field went from "selects the format for new writes" to a pure write guard.

Still holding at the Step 2 checkpoint — ready to commit on your approval.

commit and continue, then

2w ago·30.2s·1 call

Committed as e4ca4508d0 — drop checkpoint_version from checkpoint metadata (15 files, 32 insertions, 302 deletions).

That was the last planned step, so the branch is complete: two commits, gates removed first, then the stamp itself.

  1. bc49bc896b — remove checkpoint_version read gates
  2. e4ca4508d0 — drop checkpoint_version from checkpoint metadata

The policy subsystem (refs/entire/policies/checkpoint, the hidden entire checkpoint policy command, write gates, telemetry) is untouched as agreed, and existing checkpoints' stored checkpoint_version values are left for the external migration script.

One note before this ships: I ran unit tests on the changed packages but not mise run test:integration or the e2e canary — if any integration test asserts on checkpoint_version in metadata.json, it would only surface there. Want me to run the integration suite, or go straight to /pr?

Base directory for this skill: /Users/pfleidi/.agents/skills/pfleidi/skills/de-slop

De-slop

Deliberately reduce slop in a change, then land the result as a reviewable PR. By default the target is the changes the current branch introduces against origin/main; the user can point it at a directory, package, or the whole repo instead. Slop is code that costs more than it earns: verbosity, over-abstraction, over-commenting, dead or unused code, hand-rolled solutions to already-solved problems, premature optimization, and tests that assert little. This skill removes it without changing behavior.

This is an opt-in operation. It intentionally overrides the normal "stay scoped, no unrelated refactors" rule — but only within the branch the user asked you to de-slop, and only for changes that clearly reduce slop.

Ground Rules

What Counts as Slop

Leave alone anything that is merely not-how-you-would-write-it. Taste is not slop.

Workflow

1. Scope and branch

By default, de-slop the changes the current branch introduces against origin/main — the same diff the review skills use. Fetch first so the comparison is current:

1
2

git fetch origin main
git diff --stat origin/main...HEAD

Work on the current branch and add the cleanup as new commits on top. If the user named a different scope — a directory, package, or a whole-repo pass — use that instead; for a whole-repo pass not already on a branch, propose a branch name and wait for approval before creating it.

2. Build a slop inventory

Survey the target — by default the files the branch changed against origin/main — and produce a concrete, located list of slop: file and line, what it is, and why removing it is safe. Reuse detection rather than eyeballing:

Verify each candidate against the source yourself. Discard anything speculative.

3. Prioritize into a commit plan

Order the inventory into commit-sized units, highest value and lowest risk first. Group by coherent change, not by file. Present the plan as an ordered list of one-line commit subjects (the stacked-PR shape) and get approval before executing, per the repo's plan-first workflow.

4. Execute each unit

For each unit, in order:

  1. If the behavior it touches is untested, backfill a test that pins current behavior and confirm it passes.
  2. Make the simplification.
  3. Run focused verification for the changed packages/area — build, the relevant lint task, and the directly related tests. Show the command and result.
  4. Commit the single coherent change on approval, with a message stating what slop was removed and why it is safe.

Keep implementation and its tests in the same commit. Stop at each commit checkpoint; do not batch ahead without approval.

5. Know when to stop

Stop when the remaining candidates are taste, when the risk of a change exceeds its value, or when further simplification would need a behavior change or a design decision the user has not authorized. List what you deliberately left and why. Do not manufacture churn to look thorough.

6. Validate and open the PR

Before landing, run the fuller verification the change warrants (build, lint, and tests across the affected area) and confirm it is green — show the evidence. Then land it: if the branch has no PR yet, open one with pfleidi:pr; if it already has one, the cleanup commits extend it (push on approval). Either way, frame the description or summary around what got simpler and more robust, and note that the commits are ordered to be split into a stack if the reviewer prefers.

Report

At each checkpoint, keep it short: what this unit removed, the test that guards it, and the verification result. At the end, summarize the net effect (what shrank, what got covered, what you left and why) and the final green-CI evidence.

2w ago·2m·5 calls

Three detection agents are running in the background (dead-code/indirection, Go cleanliness, test audit). I'll verify their findings against source when they report back, then present the prioritized commit plan for your approval.

a0d3923b6e06f2472 /private/tmp/claude-501/-Users-pfleidi-entire-cli--worktrees-remove-checkpoint-version-from-metadata/604de68f-041d-43b6-93c5-6873c9698703/tasks/a0d3923b6e06f2472.output failed Background agent "Find dead code and leftover indirection" was running when the previous Claude Code process exited and did not complete. Its in-process state was lost. Check its worktree/output for partial work before assuming the task landed.

2w ago

a53d4b44d62e1b3dd /private/tmp/claude-501/-Users-pfleidi-entire-cli--worktrees-remove-checkpoint-version-from-metadata/604de68f-041d-43b6-93c5-6873c9698703/tasks/a53d4b44d62e1b3dd.output failed Background agent "Go cleanliness pass on branch diff" was running when the previous Claude Code process exited and did not complete. Its in-process state was lost. Check its worktree/output for partial work before assuming the task landed.

2w ago

a35afecd612589912 /private/tmp/claude-501/-Users-pfleidi-entire-cli--worktrees-remove-checkpoint-version-from-metadata/604de68f-041d-43b6-93c5-6873c9698703/tasks/a35afecd612589912.output failed Background agent "Audit tests around removed version code" was running when the previous Claude Code process exited and did not complete. Its in-process state was lost. Check its worktree/output for partial work before assuming the task landed.

2w ago·47.3s·3 calls

The three detection agents are relaunched and running (dead-code/indirection, Go cleanliness, test audit — all read-only over the branch diff). Nothing to act on until they report; I'll verify their findings against source as they come back and then present the slop inventory as a prioritized commit plan for your approval.

aa249754b1b7fac93 toolu\_01EsuYXhEg14jt7vP71EQE6h /private/tmp/claude-501/-Users-pfleidi-entire-cli--worktrees-remove-checkpoint-version-from-metadata/0b443113-215b-4ee0-bb88-1cec595a32e5/tasks/aa249754b1b7fac93.output completed Agent "Go cleanliness pass on branch diff" finished A task-notification fires each time this agent stops with no live background children of its own. The user can send it another message and resume it, so the same task-id may notify more than once. Review complete. I read the full \`git diff origin/main...HEAD\` (25 files, +36/-661), then inspected the current state of every added/modified region and its surroundings in \`persistent.go\`, \`attach.go\`, \`resume.go\`, \`rewind.go\`, \`explain.go\`, \`explain\_export.go\`, \`manual\_commit\_rewind.go\`, \`manual\_commit\_condensation.go\`, \`checkpoint\_policy\_write.go\`, \`metadata.go\`, \`errors.go\`, \`aliases.go\`, \`persistent\_reader.go\`, and \`refs\_store.go\`. I also verified via \`rg\` that nothing the branch deleted left dead code behind, and confirmed the touched packages compile (\`go build ./api/checkpoint/... ./cmd/entire/cli ./cmd/entire/cli/checkpoint/... ./cmd/entire/cli/strategy ./cmd/entire/cli/checkpointpolicy\` — exit 0).

No findings. The deletions landed cleanly:

  • /Users/pfleidi/entire/cli/.worktrees/remove-checkpoint-version-from-metadata/cmd/entire/cli/checkpoint/persistent.go — applySessionWrite's doc comment was correctly trimmed of the "checkpointVersion is stamped..." sentence and now matches the signature; writeStandardCheckpointEntries and writeCheckpointSummary signatures/docs read cleanly; no now-pointless parameter or variable remains; writeCheckpointSummary's existing-summary branch still earns its keep (attribution/hasReview/hasInvestigation/imported carry-forward).
  • checkpointpolicy package still has real users after version.go's deletion — ParseFormat/CanRead are used by policy.go and update.go, Normalize by checkpoint_policy.go, CanSatisfyPolicy by the retained write gates. Nothing orphaned.
  • CheckpointVersionBranchV1 (kept in api/checkpoint/errors.go and aliased in checkpoint/aliases.go) is still used by checkpointpolicy/policy.go for policy defaults, so keeping it while deleting CheckpointVersionRefsV1 is correct.
  • The collapsed flows (attach.go gate call, rewind.go inline if ...; err == nil, resume.go``restoreSingleSession straight-line read) all match surrounding idiom; error wrapping retained its meaning everywhere.
  • Docs (sessions-and-checkpoints.md) were updated consistently with the new "write guard only" semantics.

Two near-misses I considered and rejected as taste-only, per your exclusions:

  1. persistent.go:954-957 — readSummaryFromBlob is now a pure pass-through to readJSONFromBlob[CheckpointSummary](s.repo, hash) after losing its normalize call. With 5 call sites it still earns its name as the single summary-read point, so inlining would be a lateral move, not a cleanup.
  2. resume.go:846-847 — deleting the unsupportedVersionErr block left no blank line between the closing } and the // Nothing worked comment. gofmt-clean, purely cosmetic. <subagent_tokens>89312</subagent_tokens><tool_uses>23</tool_uses><duration_ms>216190</duration_ms>

2w ago·10.9s

Go cleanliness pass came back clean — no findings. It confirmed the trimmed doc comments match the new signatures, checkpointpolicy has no orphans after version.go's deletion, and it explicitly considered and rejected inlining readSummaryFromBlob (5 call sites still justify it as the single summary-read point). Two agents still running: dead-code/indirection and the test audit. I'll consolidate once they're all in.

ace089b899e102266 REDACTED /private/tmp/claude-501/-Users-pfleidi-entire-cli--worktrees-remove-checkpoint-version-from-metadata/0b443113-215b-4ee0-bb88-1cec595a32e5/tasks/ace089b899e102266.output completed Agent "Audit tests around removed version code" finished A task-notification fires each time this agent stops with no live background children of its own. The user can send it another message and resume it, so the same task-id may notify more than once. Audit complete. All paths below are under \`/Users/pfleidi/entire/cli/.worktrees/remove-checkpoint-version-from-metadata/\`.

Findings (ranked)

1. Weakened test + stale doc comment: cmd/entire/cli/checkpoint/refs_store_seam_test.go:18-22, 64-70, 79TestSeam_GitRefsPrimaryWithGitBranchMirror's doc comment still claims it "asserts reads resolve from the git-refs primary", but the dropped wantVersion argument (CheckpointVersionRefsV1 vs CheckpointVersionBranchV1) was the only assertion that could distinguish which store served the read — both stores return identical summary content otherwise. After the branch, assertSeamVariants asserts the exact same things for the "primary" and "mirror" subtests; the remaining differentiator (line 68) only proves the per-checkpoint ref was written, not that Read resolved from it. If the composed store silently fell back to the branch mirror on reads, this test would still pass. Why it matters: this was the seam test guarding the branch→refs rollout topology; the comment now overstates what's verified, and a primary-read regression is undetectable. (Since the metadata field is gone, restoring the distinction would need a different probe, e.g. deleting the v1 branch ref before the primary-read subtest.)

2. Minor, pre-existing: restoreSessionTranscriptFromStrategy (cmd/entire/cli/rewind.go:761) has no direct unit test The dropped ReadCheckpoint + version gate had tests only for the unsupported-version case (deleted with the feature). git grep origin/main shows the function had no other test before this branch either, and its errors are swallowed at both call sites (rewind.go:333, :575 — failure degrades to "not restored"), same as before for non-version errors. Success path is exercised end-to-end by cmd/entire/cli/integration_test/rewind_test.go (transcript copied for claude -r). Not a gap this branch created; listing for completeness only.

Clean categories

  • Orphaned helpers / unused imports: clean.go vet on ./cmd/entire/cli, ./cmd/entire/cli/checkpoint, ./cmd/entire/cli/strategy, ./cmd/entire/cli/checkpointpolicy — exit 0, no output (vet typechecks test files, so unused imports would fail). Helpers used only by deleted tests were deleted with them (rewriteRootSummary, rewriteExportCheckpointVersionToRefsV2, checkpointInfoPolicyStub); shared helpers remain in active use (readSummaryFromBranch: 7 remaining uses, setupRepoForUpdate, resumeCheckpointInfoReaderStub/writeCommittedResumeCheckpointWithAgent: 10 uses, exportTestAuthorName/Email: 6 uses).
  • Other modified tests kept their point.refs_store_test.go:145 (TestGitRefsStore_WriteAllVariantsAndRead) lost one assert among several and still reads directly through the refs store; persistent_tripwire_test.go only adapted to the signature change.
  • Coverage gap (a) attach + policy: covered.TestAttachBlocksWhenPolicyWriteUnsupported (cmd/entire/cli/attach_test.go:71-103) drives runAttach with an unsupported policy, asserts the "checkpoint policy cannot be satisfied" error and that no session state was recorded — exercises the new ensureCheckpointPolicyAllowsCheckpointData call at attach.go:258. Same helper's other call sites also covered: import_cmd_test.go:68, explain_test.go:1132.
  • Coverage gap (b) resume missing checkpoint: covered.TestRestoreSingleSession_NoTranscriptDoesNotReportRestored (resume_test.go:1050) hits the now-direct ReadRawSessionLogForCheckpoint missing-checkpoint path (graceful "session log not available", ok=false); TestResolveLatestCheckpointReturnsErrorWhenAnyCheckpointCannotBeRead and TestCheckRemoteMetadata_NoRemoteMetadataBranch were retained and cover readCheckpointInfoFromStore error propagation and the remote-miss path.
  • Coverage gap (d) condensation policy refusal: covered.TestCondenseSessionRejectsUnsupportedPolicy (strategy/checkpoint_policy_test.go:26-55) and TestCondenseSessionRejectsUnreadablePolicy (:57) assert CondenseSession errors with nil result — the CanSatisfyPolicy check at manual_commit_condensation.go:155 is directly tested.
  • Integration/e2e references to the removed field: clean.rg -n 'checkpoint_version|CheckpointVersion' cmd/entire/cli/integration_test/ e2e/ — zero hits. (The remaining checkpoint_version hits elsewhere are the policy field in checkpointpolicy/, which this branch intentionally kept.) <subagent_tokens>93955</subagent_tokens><tool_uses>21</tool_uses><duration_ms>243137</duration_ms>

2w ago·21.9s

The test audit found one real branch-created weakness, and confirmed all four suspected coverage gaps are actually covered:

This matches what I read of the seam test earlier — the version assert was indeed the sole discriminator, so I'm treating it as confirmed.

One agent left (dead-code/indirection); I'll present the full inventory and commit plan when it lands.

af9f41ca3103fa2be REDACTED /private/tmp/claude-501/-Users-pfleidi-entire-cli--worktrees-remove-checkpoint-version-from-metadata/0b443113-215b-4ee0-bb88-1cec595a32e5/tasks/af9f41ca3103fa2be.output completed Agent "Find dead code and leftover indirection" finished A task-notification fires each time this agent stops with no live background children of its own. The user can send it another message and resume it, so the same task-id may notify more than once. All categories investigated. Verification: \`go vet ./api/checkpoint/ ./cmd/entire/cli/ ./cmd/entire/cli/checkpoint/ ./cmd/entire/cli/checkpointpolicy/ ./cmd/entire/cli/strategy/\` — exit 0, no output (compiles all test code too, so no unused imports/helpers survive at compile level).

Findings

1. Helpers left with one caller after the deletions

  • /Users/pfleidi/entire/cli/.worktrees/remove-checkpoint-version-from-metadata/cmd/entire/cli/checkpoint_policy_write.go:37 — unsupportedCheckpointPolicyError(policy) dropped from 2 callers to 1 (only ensureCheckpointPolicyAllowsCheckpointData at line 26; its other caller checkpointVersionForNewCheckpoint was deleted by this branch — verified with rg across the repo). Inlining the 6-line body is behavior-neutral (same wrapped sentinel, same message). Mitigating factor: it mirrors unreadableCheckpointPolicyError, which still has 2 callers (line 32 and hook_registry.go:215), so keeping the symmetric pair is defensible. Suggested fix: optionally inline into ensureCheckpointPolicyAllowsCheckpointData; low priority.
  • Everything else checked out multi-caller: checkpointPolicyForCheckpointData (2), ensureCheckpointPolicyAllowsCheckpointData (3: attach.go:258, import_cmd.go:59, explain.go:701), readSummaryFromCheckpointTree (2: persistent.go:1318 and refs_store.go:325 — shared across both backings, still earns its keep), assertSeamVariants (2 subtests).

2. Error sentinels / constants / test helpers

  • errUnsupportedCheckpointPolicy / errUnreadableCheckpointPolicy (checkpoint_policy_write.go:15-16): both still live. errUnreadableCheckpointPolicy is matched via errors.Is in hook_registry_test.go:237; errUnsupportedCheckpointPolicy is never matched with errors.Is anywhere, but it is used as a value at hook_registry.go:285 and wrapped at checkpoint_policy_write.go:42. Both sentinels and their usage shape are byte-identical to origin/main (verified via git show origin/main:...) — pre-existing, not branch slop. No action for this branch.
  • checkpoint.CheckpointVersionBranchV1 alias (cmd/entire/cli/checkpoint/aliases.go:55): the branch removed all uses inside the checkpoint package, but the alias is still consumed by checkpointpolicy (policy.go:17-31 imports cmd/entire/cli/checkpoint, not api/checkpoint). Not dead.
  • Test helpers readSummaryFromBranch, writeMalformedCheckpointPolicyForCLITest, writeUnsupportedCheckpointPolicyForCLITest, resumeCheckpointInfoReaderStub, writeCheckpointForExport: all verified to have surviving callers after the test deletions. Nothing orphaned.

3. readSummaryFromBlob (persistent.go:955)

Now a pure one-line alias for readJSONFromBlob[CheckpointSummary](s.repo, hash) — the normalizeCheckpointSummary step it existed for is gone. It has 5 call sites (persistent.go:256, 295, 351, 573, 778). Judgment: with 5 callers it's spelling sugar, not indirection worth hunting — inlining is behavior-neutral but yields no simplification (each site becomes marginally longer). Keep; if you inline it, also drop the now-content-free doc comment "reads CheckpointSummary from a blob hash" (line 954), which restates the signature.

4. Stale comments/docs referencing the removed stamping/gating — one real hit, just outside the diff

  • /Users/pfleidi/entire/cli/.worktrees/remove-checkpoint-version-from-metadata/cmd/entire/cli/checkpoint_policy.go:31 (help text, asserted verbatim by checkpoint_policy_test.go:42): "checkpoint_version selects the checkpoint metadata format used for new writes." After this branch nothing consumes the policy's checkpoint_version for writes — the backend is chosen by settings (checkpoint/registry.go), and the stamped field is gone. Its only remaining effects are the CanSatisfyPolicy write-block and telemetry. The branch updated docs/architecture/sessions-and-checkpoints.md:322 to the new "write guard" wording but left the CLI help (and its test) on the old "selects the format" semantics. Suggested fix: reword the Long help to the write-guard phrasing and update the string assertion in checkpoint_policy_test.go:42.
  • Within the changed files themselves: clean. No leftover "stamp"/"normalize"/"read-supported"/"unsupported checkpoint_version" references anywhere in cmd/, api/, or docs/ (rg came back empty).

5. persistent_reader.go left nearly empty

/Users/pfleidi/entire/cli/.worktrees/remove-checkpoint-version-from-metadata/cmd/entire/cli/checkpoint/persistent_reader.go is down to 14 lines holding only the AuthorReader interface, which is genuinely used (fanout.go:32/87/97, store.go:12, refs_store.go:22, explain.go:753, plus tests). Behavior-neutral cleanup: fold the interface into fanout.go (its main consumer) or persistent.go and delete the file — same package, no import changes. Optional; the interface itself is not slop.

6. Restructured code paths in resume/rewind/explain

Nothing further collapses — the branch did this part cleanly:

  • resume.go:1015 (restoreSingleSession) and rewind.go:764 (restoreSessionTranscriptFromStrategy): the summary read that existed only to feed the gate was removed outright, not left as a dead read.
  • resume.go``checkRemoteMetadata (755-861): the unsupportedVersionErr accumulator is fully gone; remaining error branches are all reachable (fetch fallback chain).
  • strategy/manual_commit_rewind.go:650: the summary read survives the gate removal legitimately (used at lines 667 and 675).
  • explain.go:770 / explain_export.go:293,399: summary is consumed by ReadLatestSessionContent, resolveSessionIndex, and buildCheckpointJSONEnvelope respectively — the reads aren't redundant.
  • resume.go:338-345 back-to-back Debug+Warn logging of the same error looks odd but pre-exists this branch (only the IsUnsupportedVersion early-return between them was deleted); out of scope.
  • Minor taste-only note (not slop): rewind.go:330 and :572 now silently swallow allrestoreSessionTranscriptFromStrategy errors via if ...; err == nil. That matches pre-branch behavior for every error except the removed unsupported-version case, so it's an intentional consequence of the gate removal, not a leftover.

Summary of actionable items: stale checkpoint_version help text in checkpoint_policy.go:31 + its test assertion (the one real leftover); optionally fold AuthorReader out of the near-empty persistent_reader.go; optionally inline single-caller unsupportedCheckpointPolicyError. Categories 2, 3, and 6 produced no required changes. <subagent_tokens>151696</subagent_tokens><tool_uses>42</tool_uses><duration_ms>439904</duration_ms>

2w ago·1m·3 calls

Fanout reads are pure delegation to the primary — no mirror fallback — so a "delete the v1 branch, then re-read through the composed store" probe cleanly pins that reads resolve from the git-refs primary. Inventory is complete and verified.

Slop inventory and commit plan

The branch itself came back remarkably clean — the Go cleanliness pass had zero findings, no orphaned helpers or dead code anywhere, and all four suspected coverage gaps (attach gate, resume missing-checkpoint, rewind restore, condensation refusal) are covered by existing tests. Two real leftovers survive verification:

1. reword checkpoint policy help to write-guard semanticscmd/entire/cli/checkpoint_policy.go:31 (hidden entire checkpoint policy command help) still says checkpoint_version "selects the checkpoint metadata format used for new writes" — nothing selects a format from it anymore; it's purely a write guard. The branch updated the architecture doc to the new wording but missed this help text, and checkpoint_policy_test.go:42 asserts the stale sentence verbatim. Fix: reword help + assertion together, mirroring the doc's write-guard phrasing. Behavior-neutral (help text only).

2. pin seam test reads to the git-refs primaryrefs_store_seam_test.go — removing the version assert deleted the only discriminator between "read served by the git-refs primary" and "read served by the git-branch mirror"; the test's doc comment now overstates what it verifies. Fix: add a final subtest that deletes the v1 branch ref and asserts the composed store still reads the checkpoint — provable only if the primary serves reads. Test-only, pins current behavior.

Deliberately left (verified, but taste or pre-existing):

  • readSummaryFromBlob is now a one-line alias with 5 call sites — still earns its name as the single summary-read point; inlining is lateral churn.
  • unsupportedCheckpointPolicyError dropped to one caller, but keeps symmetry with its unreadable sibling (2 callers).
  • persistent_reader.go is down to 14 lines holding only the widely-used AuthorReader interface — folding it elsewhere is file churn, not simplification.
  • Back-to-back Debug+Warn logging in resume.go and the untested-in-isolation rewind transcript restore both pre-date this branch.

Two commits, ordered as listed (help-text fix first: lowest risk, highest confidence). Approve the plan and I'll execute unit 1?

I approve

2w ago·1m·5 calls

Unit 1 checkpoint — done and verified:

  • Reworded checkpoint_policy.go help from "selects the checkpoint metadata format used for new writes" to "is a checkpoint-data write guard", and updated the verbatim assertion in checkpoint_policy_test.go:42. Two lines, help text only.
  • Guard test: TestCheckpointPolicyCmd_HelpDocumentsEnforcementBehavior passes (along with the rest of TestCheckpointPolicyCmd*, all PASS above); mise run lint exited clean.

Commit as reword checkpoint policy help to write-guard semantics?

commit and continue

2w ago·2m·6 calls

Unit 2 checkpoint — done and verified:

  • Added a reads resolve from primary subtest to TestSeam_GitRefsPrimaryWithGitBranchMirror: it deletes the mirror's v1 branch ref, then re-runs the full read assertions through the composed store. This restores the discriminator the version assert used to provide — the test's doc-comment claim that "reads resolve from the git-refs primary" is verifiable again, and it would catch a silent fallback-to-mirror wiring regression.
  • Evidence: all three subtests PASS (go test -run TestSeam_GitRefsPrimaryWithGitBranchMirror -count=1), mise run lint → 0 issues.

Commit as pin seam test reads to the git-refs primary? That's the last inventory item — after this, remaining candidates are the taste-only ones I listed as deliberately left, and the next step would be validation + PR (per the de-slop flow: this branch has no PR yet, so I'd run the fuller verification and open one via /pr on your go-ahead).

cf28d62reword checkpoint policy help to write-guard semantics\ \ Nothing selects a checkpoint metadata format from the policy's\ checkpoint_version anymore; it only gates checkpoint-data writes.\ Align the hidden policy command's help text with the architecture\ doc's write-guard wording.\ \ Entire-Checkpoint: 582cbad18ece+2/-2

commit and continue

2w ago·37.2s·2 calls

Committed as dca2300. That completes the de-slop inventory — moving to the landing step via the PR skill, which drives verification, push, and the draft PR.

dca2300pin seam test reads to the git-refs primary\ \ Removing the checkpoint_version assert left the seam test unable to\ tell whether reads came from the git-refs primary or the git-branch\ mirror — both stores now return identical content. Probe it directly\ instead: delete the mirror's v1 branch and assert the composed store\ still serves full reads, which only the primary can.\ \ Entire-Checkpoint: afcc38e41a31+9

Base directory for this skill: /Users/pfleidi/.agents/skills/pfleidi/skills/pr

Create Pull Request

1. Understand the Branch

Use origin/main as the comparison base for understanding branch scope. Do not use local main, a local PR target branch, or direct tree diffs such as git diff main or git diff origin/main for scope checks; those can include upstream-only changes and make this branch look like it reverted unrelated work.

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BASE=origin/main
MERGE_BASE=$(git merge-base HEAD "$BASE")
git log --oneline "$BASE"..HEAD

Read the commit history to understand the full scope of changes on this branch.

Review the changed file list from the merge base to the current working tree and confirm every changed file belongs to the PR's stated goal:

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git diff --name-status "$MERGE_BASE"

If unrelated files or commits are present, STOP and report them. Do not create a PR that bundles unrelated work.

2. Sync with origin/main

Before discovering verification commands, bring the branch up to date with origin/main so verification runs against the merged state.

Check that the working tree is clean:

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git status --short

If there are uncommitted changes, STOP and ask the user to commit or stash them before continuing. A sync into a dirty tree creates ambiguous failure states.

Fetch and merge:

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git fetch origin main
git merge origin/main

Three outcomes:

  • Already up to date — no commits to merge. Proceed to step 3.
  • Clean merge — merge commit created (or fast-forward applied). Proceed to step 3.
  • Conflicts — merge halts with conflicted files. STOP and report each conflicted file. Do NOT auto-resolve; the user must resolve the conflicts and complete the merge commit themselves. Re-run the PR skill after resolution.

3. Discover Project Verification Commands

Inspect the project to determine how to build, lint, and test. Collect candidate commands from these sources, then deduplicate them before running anything:

  1. Makefile — look for build, lint, check, test, ci, verify targets. Read the target recipes to understand what they run.
  2. mise — check for .mise.toml or .mise/*.toml. Look for [tasks] definitions covering build, lint, test. If found, use mise run <task>.
  3. CI workflows — read .github/workflows/*.yml (or .gitlab-ci.yml, etc.) to understand required coverage. CI is the ground truth for what must pass, but CI matrix shards and CI-only wrappers are not automatically local verification commands.
  4. README.md — look for "Development", "Contributing", "Building", or "Testing" sections that document how to run checks.
  5. Package manager conventions— detect from project files:
  • go.mod → go build ./..., go vet ./..., go test ./...; do NOT infer a lint command from Go alone
    • package.json → check scripts for build, lint, test
    • Cargo.toml → cargo build, cargo clippy, cargo test
    • pyproject.toml / setup.py → check for configured linters, pytest

If no lint command exists after checking all sources, state that explicitly instead of assuming an unavailable linter binary.

Reuse Cached Verification Discovery

Before rediscovering commands from scratch, choose an artifact directory using the AGENTS.md temporary artifact rule with agent name pfleidi-pr:

  • Use ./tmp/pfleidi-pr/ only when ./tmp/ already exists and is already ignored.
  • If no project-local artifact directory is available, do not use a verification cache by default. Ask before using /tmp/pfleidi-pr/ or modifying ignore files.

When an artifact directory is available, check for a verification cache at <artifact-dir>/verification-<repo-name>.md. The cache is only an input-token optimization; never commit it and never trust it blindly. If no artifact directory is available, perform normal discovery and skip writing the cache.

Reuse the cache only when all of these are true:

  • It names the same worktree root and remote.
  • It lists the verification source files it was based on, such as Makefile, .mise.toml, .mise/*.toml, CI workflow files, README files, and package manifests.
  • Those source files still exist or are still intentionally absent.
  • git diff --name-only origin/main -- <source files> shows no branch changes to those source files.

If the cache is missing, stale, or incomplete, perform normal discovery. After discovery, update the cache with:

  • Repository root and remote.
  • Verification source files inspected.
  • Selected command plan grouped by coverage area.
  • Commands intentionally skipped as duplicates, aggregate/subtask overlaps, CI-only jobs, or too-slow shard matrices.
  • Any assumptions, such as "no documented lint task found."

Deduplicate Verification Commands

Build a command plan by coverage area, not by source. Do not run every command discovered.

  • Run at most one command for each coverage area: build/compile, lint/static analysis, unit/core tests, integration tests, e2e/smoke tests.
  • Prefer documented local developer tasks over CI-specific commands when they cover the same area.
  • Do not run both an aggregate task and its constituent tasks. For example, if mise run check runs lint and tests, either run mise run check alone or run the narrower lint/test tasks, not both.
  • Treat CI matrix shards as duplicated slices of one suite. Do not run every *:shard:* command locally when an unsharded local task covers the suite.
  • If CI has only sharded commands and no local equivalent, ask before running all shards. Otherwise, run the smallest representative or changed-scope test command and note that the full shard matrix remains for CI.
  • Do not run CI-only canary/e2e jobs locally by default. Run them only when the PR changes that surface, when the user asks, or when the project documents them as required local PR verification.

Log which sources you used, which duplicate/CI-only commands you skipped, and what commands you will run. If the deduplication rules require asking before slow CI-only coverage, STOP for confirmation; otherwise immediately proceed to step 4.

4. Run Verification and Auto-Fix

Run the deduplicated command plan in the fewest safe batches. Prefer background processing for independent validation tasks instead of running everything sequentially.

The commands should cover, at minimum:

  • Build — the project compiles without errors
  • Lint / static analysis — no lint warnings or static analysis failures
  • Tests — the selected local test coverage passes without duplicating CI shards or aggregate/subtask combinations

Use the exact commands, flags, and build tags found in step 3 for the commands you selected. Do not invent your own flags.

Parallel Verification Rules

Partition the selected commands into dependency-safe batches before running them:

  • Run mutating commands alone and before validators that depend on their output. This includes formatters, generators, codegen, migrations, package installation, or commands known to update snapshots, lockfiles, generated files, caches in the repo, or test fixtures.
  • Run dependent commands after their prerequisite batch passes. For example, do not start tests that require generated code until generation succeeds.
  • Run independent read-only validation commands concurrently in the same background batch. Build, lint/static analysis, typecheck/vet, and unit tests can usually share a batch when they do not mutate the working tree and do not require the same exclusive service, port, database, or fixture directory.
  • Keep integration, e2e, or service-backed commands separate unless the project documents that they are parallel-safe.
  • If unsure whether two commands are independent, run them sequentially. Correctness of validation beats speed.

For each background batch:

  1. Start every command from the same working-tree state.

  2. Run each selected validator directly, for example mise run lint, go test ..., or npm test -- .... Do not wrap validators in sh -c, shell redirection, tee, command separators, or pipelines solely to capture logs; that defeats command-prefix approvals and causes extra permission prompts.

  3. Capture each command's stdout, stderr, exit status, and command line from the tool output separately.

  4. While the batch is running, do not edit files, start auto-fixes, or treat partial output as a result.

  5. Wait for every command in the batch to finish, then show verification as a compact table:

Command Exit Relevant output
go test ./pkg/foo -run TestBar -count=1 0 Short success excerpt.
  1. For failures or short outputs, show complete output in the relevant-output column or immediately below the table. For long successful outputs, show the relevant excerpt and state that the rest was truncated.

  2. If any command in the batch fails, treat the whole batch as failed for the fix loop. Results from other commands in that stale batch may help diagnose, but they do not count as passing verification after files change.

On Failure: Fix and Re-verify

If any command fails, do NOT stop. Instead:

  1. Read the error output and identify every failure
  2. Fix all issues — apply the minimal changes needed to make the failing command pass
  3. Re-run the deduplicated verification plan from the top, using the same safe batching rules (not just the previously failing command — fixes can introduce new issues)
  4. Show the updated verification table again, including complete failure output for any command that still fails

Repeat this cycle until all commands pass. Cap at 3 fix attempts. If verification still fails after 3 rounds, STOP and present the remaining failures to the user with full failure output — do not keep looping.

5. Prompt for Commit

After all verification passes, check for uncommitted changes:

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git status --short

If there are uncommitted changes (from auto-fixes in step 4):

  1. Show the diff of all uncommitted changes
  2. Propose a semantically correct commit message using the subject-plus-context style from AGENTS.md. The message must describe the net fix (e.g., "fix lint warnings in config parser" not "fix issues found during PR prep").
  3. If compile/build did not pass for code changes, say the work is not commit-ready and do not ask to commit until the gap is resolved or the user explicitly takes over.
  4. STOP and wait for user approval. The user may edit the message, split the changes, or commit themselves.

If the user approves the commit, do not rerun the full verification suite before committing unless files changed after step 4. If another sanity check is needed, use the commit-time verification scope from AGENTS.md: lint tasks, a compile/build check for code changes, and tests directly related to the changed code only.

If there are no uncommitted changes, proceed directly to step 6.

6. Push the Branch

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git push origin HEAD

If the branch has no upstream yet, use git push -u origin HEAD.

7. Create the PR

Determine a concise PR title (under 70 characters) from the commit history and diff.

Set the target base branch from the user-provided PR base, or main when the user did not provide one. Scope checks still use origin/main; the PR target base controls only the GitHub PR destination.

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PR_BASE=main

If the user provided a PR target base, set PR_BASE to that branch name instead.

Determine the pushed source branch:

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HEAD_BRANCH=$(git branch --show-current)

If HEAD_BRANCH is empty, STOP and report that PR creation needs a named local branch.

Determine the GitHub repository slug from the origin remote before writing the PR body:

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REMOTE_URL=$(git remote get-url origin)

Extract GITHUB_REPO as <owner>/<repo> from these origin URL forms:

  • git@github.com:<owner>/<repo>.git
  • https://github.com/<owner>/<repo>.git
  • ssh://git@github.com/<owner>/<repo>.git
  • entire://<mirror-host>/gh/<owner>/<repo>

Strip a trailing .git when present. For entire:// remotes, ignore the mirror host and use only the suffix after /gh/; do not use any checkpoint-storage repository URL as the PR target when the entire://.../gh/... origin is available.

If the origin URL does not expose a GitHub repository, try:

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gh repo view --json owner,name --jq '"\(.owner.login)/\(.name)"'

If that still cannot identify a repository, STOP and ask the user for the GitHub target.

Use the same branch-only comparison from step 1 ($MERGE_BASE to the current working tree) when deriving the title, PR body, changed-file list, and mostly-Markdown detection. Do not use local main or direct git diff origin/main output for PR description decisions.

Write the PR body to help a reviewer (human or bot) understand the change without re-deriving it from the diff. Include these sections; omit any that genuinely don't apply:

  • Why — the motivation: what problem this solves, what behavior was broken or missing, what constraint forced the change. This is the most important section. Be specific so neither a reviewer nor a bot has to infer the reason from the diff alone.
  • What changed — a short, factual summary of the net change. One or two sentences; the diff is the source of truth.
  • Usage examples — for a new or changed command, API, config option, workflow, or user-facing behavior, show a small realistic example of how to use it and what to expect. For UI work, add screenshot placeholders such as Before: <screenshot> and After: <screenshot> when actual screenshots are not available yet.
  • Decisions made during development — non-obvious choices from the development process: why one approach over another, why an existing abstraction wasn't reused, why a check lives where it does, what assumptions shaped the implementation, and what constraints were intentionally accepted.
  • Technical tradeoffs — when a real engineering tradeoff was made, name the options weighed, what the chosen approach gives up, and why that tradeoff is acceptable. Skip if the change was mechanical with no meaningful alternatives.
  • Reviewer notes — only for migrations, deployment ordering, backwards-incompatible behavior, or known follow-up work not in this PR. Skip otherwise.
  • Rendered Markdown (for mostly Markdown PRs) — links to the changed Markdown files rendered on GitHub.

Do NOT include:

  • A "Test plan" or "Verification" section listing the CLI commands run. Verification already happened in step 4; the transcript doesn't help the reviewer.
  • A list of newly added tests. The diff already shows them; the list rots when tests are renamed or moved.
  • A file-by-file changes summary. The diff already shows this too.

Choose the PR creation command from the origin URL.

For entire://.../gh/<owner>/<repo> origins, do not use gh pr create. It may still inspect the local git remote and fail to infer a GitHub host even when --repo "$GITHUB_REPO" is supplied. Use the GitHub API through gh api with the already-derived repository slug and pushed branch:

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gh api "repos/$GITHUB_REPO/pulls" \
  -f title="<title>" \
  -f body="<body>" \
  -f head="$HEAD_BRANCH" \
  -f base="$PR_BASE" \
  -F draft=true \
  --jq .html_url

For normal GitHub remotes, use gh pr create:

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gh pr create --draft --repo "$GITHUB_REPO" --base "$PR_BASE" --head "$HEAD_BRANCH" --title "<title>" --body "<body>"

If a non-entire:// origin hits the same host-inference failure from gh pr create, use this gh api creation path once instead of retrying gh pr create.

Create a ready-for-review PR only when the user explicitly asks for it with wording such as "non-draft", "ready for review", or "publish it as ready". In that case, omit --draft from gh pr create or omit -F draft=true from the gh api call.

Show the PR URL and STOP.

Rules

  • Do NOT add "Generated with Claude Code" or any AI attribution anywhere
  • Do NOT summarize what you just did after showing the URL
  • Treat a PR as "mostly Markdown" when more than half of changed files are Markdown (.md, .mdx, .markdown) or the main review target is Markdown documentation. In that case, include GitHub rendered links for the changed Markdown files using the pushed branch, e.g. https://github.com/$GITHUB_REPO/blob/<branch>/<path>.md. Link all changed Markdown files when the list is short; for large docs PRs, link the main entry points or most important changed files.
  • If the user provides a title or description, use it verbatim instead of generating one, but append rendered Markdown links for mostly Markdown PRs unless the user explicitly says not to modify the description.
  • If the PR description contains checklist items (- [ ]), check them (- [x]) if and only if the corresponding step was actually verified during this workflow (e.g., build passed, tests passed, lint passed). Do NOT check items that were not verified. Do NOT leave items unchecked if they were verified.

2w ago·1m·6 calls

Cache written. Waiting on mise run check — I'll present the verification table and the drafted PR when it completes.

bebvikm73 REDACTED /private/tmp/claude-501/-Users-pfleidi-entire-cli--worktrees-remove-checkpoint-version-from-metadata/0b443113-215b-4ee0-bb88-1cec595a32e5/tasks/bebvikm73.output completed Background command "Run full check (fmt, lint, unit+integration+canary tests)" completed (exit code 0)

2w ago·58.2s·3 calls

Draft PR created: https://github.com/entireio/cli/pull/1620

c8d3cabmove branch-v1 default into checkpointpolicy\ \ After the checkpoint_version metadata field was removed, the exported\ CheckpointVersionBranchV1 constant no longer described anything in\ api/checkpoint; its only consumer was checkpointpolicy's defaults,\ reached through a re-export in the cli checkpoint alias file. Define\ the constant in checkpointpolicy next to the format vocabulary that\ already owns it and drop the api const and alias, matching what the\ CheckpointVersionRefsV1 removal already did.\ \ Also fold the AuthorReader interface into persistent.go (the file\ holding it had shrunk to that single declaration) and reuse the\ v1BranchRef test helper in the seam test instead of rebuilding the\ ref name inline.\ \ Entire-Checkpoint: b417d0acc17a+41/-59