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DottaandPaperclip
54b83b15a3
## Thinking Path > - Paperclip preserves the work that its agents produce. > - Portable workspace migration can save nested workspaces before their parent. > - The parent must prove that a committed child snapshot covers any files it omits. > - The existing owner downloads and restores the same immutable child archive before and after parent capture. > - The fresh local-file checks are required, but the repeated immutable archive check is avoidable within one live source fence. > - This pull request reuses only an authenticated archive proof with an unchanged reference and provider identity. > - It also bounds independent child branches at two workers while retaining every fresh local and Git check. ## Linked Issues or Issue Description Refs #19805 and #19688. A duplicate search found no separate fix for repeated child archive verification. **What existing behavior does this improve?** Online Git parent migration after nested workspaces have committed portable snapshots. **Subsystem affected** server/ — workspace migration and nested snapshot coverage. **Current behavior** Each parent verification pass downloads, authenticates and restores every child archive, then captures the child's current local tree. The second pass repeats the immutable download and restore. Independent child branches also run in sequence. A large parent can exhaust its existing budget before parent capture begins. **Proposed behavior** One private verifier belongs to the existing live source-owner transaction. It can reuse a completed archive proof only when the full snapshot reference, operation, child closure, ETag and byte length still match. Missing or weak ETags and non-cancellation HEAD errors keep full verification. Caller cancellation still stops work. A changed identity forces fresh authenticated readback. The owner still captures current local bytes and Git state in both passes. **Reason and benefit** Remove duplicate immutable work without treating an old local-file check as current authority. Two independent topmost branches can overlap. Recursive descendants stay serial within those branches, so the bound does not grow with depth. ## What Changed - Add a private per-fence verifier to the existing tree owner. It clears its proof map at the end of the import and refuses a different owner transaction. - Reuse only completed ciphertext, GCM, plaintext, and canonical restore verification with a matching fresh provider identity. - Retain all current database, operation, recursive coverage, local-file, Git and manifest checks on each pass. - Bound independent branches at two. Abort queued work on failure and await active peers before scratch cleanup or fence release. - Use the verifier only in the existing online Git importer. Keep the offline full-verification path and all capture deadlines unchanged. - Document resource admission, fallback behavior and the hosted acceptance limit. ## Verification - Genuine baseline RED through the real parent importer: child GET counts 2 + 2, canonical restores 4, maximum overlapping readbacks 1. The four fresh local child captures already pass. - Exact positive GREEN: child GET counts 1 + 1, canonical restores 2, maximum overlapping readbacks 2. All four fresh local child captures remain. - The fixture uses real encrypted archives and the canonical S3 provider's local HTTP HEAD parsing with actual payload-derived ETags. It uses fake fixture credentials only. - Final focused suite: **13/13 PASS**, 148.36 seconds, at `eaf17d3340`. This includes recursive max-two completion, failure/cancellation joining, identity/ref/content changes, same-fence alias reuse and stale-owner refusal. - Both affected existing migration suites: **256/256 PASS**, 201.84 seconds, at initial head `eaf17d3340`. - The HEAD-failure review repair has genuine two-case RED evidence and three passing failure/cancellation controls. Full layered source/test-tree typecheck and module boundaries pass at repaired head `763648adad`. Final exact-head controls: **21/21 PASS**, 86.63 seconds (all 16 new controls plus five existing parent cases). - The first extended recursive fixture correctly failed because it created a Git branch after taking an earlier snapshot. The fixture now creates all branches before any import; the source-change guard remains intact. - Exact-head CI: 56 success, four expected skips, and one neutral Paperclip Review. Required gates pass; Greptile is fresh 5/5. Its optional aggregate-handler cleanup recommendation is resolved with the intentional fail-closed rationale. - Local verification is macOS arm64 / Node26.4.0. The observed hosted parent still needs to complete within its unchanged budget after normal delivery. No hosted timing improvement is claimed here. ## Risks - Two simultaneous child verifications can use more I/O, memory and scratch space. Operators must count logical verifications, even in one process. - HEAD availability and provider identity are required for proof reuse. Providers without a usable ETag perform the full check. - Reuse lasts only for one live transaction. A retry, changed reference, changed provider identity, process exit or owner change requires fresh verification. - Faster verification does not waive changed child bytes or guarantee a specific hosted completion time. No provider turn, authority marker, source deletion or larger timeout is introduced. ## Model Used OpenAI GPT-6 through Codex, with repository and code-execution tools. The exact serving model revision and context-window size are not exposed to this agent. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have searched GitHub for duplicate or related PRs and linked them above - [x] I have either (a) linked existing issues with `Fixes: #` / `Closes #` / `Refs #` OR (b) described the issue in-PR following the relevant issue template - [x] I have not referenced internal/instance-local Paperclip issues or links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip` URLs) - [x] My branch name describes the change (e.g. `docs/...`, `fix/...`) and contains no internal Paperclip ticket id or instance-derived details - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [x] All Paperclip CI gates are green - [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Paperclip <noreply@paperclip.ing>