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DottaandPaperclip
023f4a5d0c
## Thinking Path > - Paperclip manages agent work and its execution environments. > - A fresh repository task needs an independent checkout before its runner can start. > - The object cache from #16487 should reduce repeated network transfer. > - The cache kept Git objects but dropped remote-tracking refs during its bare clone. > - Git needs those tips to negotiate which objects it already has. > - This pull request preserves the tips in a versioned mirror cache and records explicit cache outcomes. > - The benefit is less repeated transfer and clearer evidence when a cache does not help. ## Linked Issues or Issue Description Refs #16487 and #16454. No duplicate cache-negotiation fix was found in the public PR search. **What happened?** A valid object cache could make a fresh clone slower. A controlled staging probe took 45.87 seconds and received 184.39 MB even though the reference already held the objects. An earlier probe took 52.33 seconds. An uncached clone took 20.94 seconds. `git clone --bare` copied the pristine checkout's objects, local branches, and tags, but omitted its remote-tracking refs. The source had about 1,200 remote branches. Git could not use the missing tips to negotiate those objects. **Expected behavior** Keep the pristine reference's negotiation tips. Each task must still authenticate online, use the current remote refs, and end with independent Git objects. **Steps to reproduce** 1. Clone a repository with many remote branches into a fresh checkout. 2. Publish a reference with `git clone --bare --no-hardlinks` from that checkout. 3. Clone the remote with `--reference-if-able` and `--dissociate`. 4. Compare with a reference that retains the remote-tracking tips. Use Git Trace2 and count received pack bytes. **Paperclip version or commit** The staging runtime was `27ab902d3db2770ada79c9f42a9c06e1d346f34b`, with Git 2.47.3. The cache implementation was unchanged from #16487. **Deployment mode** Docker on a persistent application volume. The probe used the application file owner and the public Paperclip repository. It did not start agent tasks or alter the application cache. ## What Changed - Publish pristine object caches with `--mirror` to retain remote-tracking tips. - Put cache format version 2 in the key and receipt. The first checkout builds a new generation. Existing generations stay under the current storage limits. - Keep the existing online authentication, current remote refs, credential and company isolation, independent objects, quotas, and fallback behavior. - Add closed Honeycomb cache outcomes and a boolean that states whether a reference was supplied to clone. - Document that a lookup hit or supplied reference does not prove Git avoided transfer. ## Verification - Controlled staging component experiment: a disposable reference copy held exactly the same 210,057 objects as the original. It added 1,187 advertised branch tips whose commits were already in those objects. - Before: 45.87 seconds and 184.39 MB received, one sample in this comparison. - After: 12.20 and 14.58 seconds; median 13.39 seconds. Received pack sizes were 1.99 and 1.95 MB. - All comparison clones used the same current remote HEAD and ended without an alternates file. - The remaining repack took 9.72–9.81 seconds. Checkout file writing took 0.86–0.96 seconds. - The staging experiment restored tips on a disposable cache copy. It did not deploy this patch or measure complete agent latency. - Confirmed both staging scratch locations were empty afterward. The original cache timestamps stayed unchanged. The temporary operator SSH key was revoked and its local files removed. - TypeScript 5.9.3 transpilation reported zero syntax diagnostics across the four changed TypeScript files. `git diff --check` passed. - The new negotiation regression fails with the old `--bare` publisher and passes with the mirror publisher. - Focused Vitest suites: 26 tests passed across repository-object-cache and execution-preparation-timing. These cover independent objects, current refs, unavailable/revoked remotes, scope separation, invalid storage, tracing isolation, and endpoint-off behavior. - The first full focused run passed 24 tests but failed its existing localhost HTTP fixture because the sandbox denied `listen` on `127.0.0.1`. The rerun with local loopback permission passed all 26 tests. - Server semantic typechecking passed with `tsc -p server/tsconfig.json --noEmit` after building the required workspace declarations. Initial attempts lacked generated dependency outputs; the completed dependency build and rerun passed. - A full application build was not run locally. CI passed: 55 checks passed and two optional checks were skipped. Greptile is 5/5 on the current head, with both findings resolved. ## Risks - Version 2 causes one cold cache rebuild. Old cache generations retain their disk usage, and the existing quota can prevent publication. - A cache still needs a full repack to produce an independent task checkout. This PR does not remove that cost. - The component experiment establishes the negotiation effect on staging. It does not establish an end-to-end agent speedup or the under-30-second goal. - The new trace fields remain behind the existing OTLP gate. Their values are closed enums or a boolean. They export no refs, paths, URLs, cache keys, credentials, or error text. ## Model Used OpenAI Codex, GPT-6 family, with code and tool use. The exact serving model ID and context window are not exposed in this session. ## 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>