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Devin Foley 79b464bf9d fix(server): surface skill materialization failures instead of dropping the skill (#12146 )

## Thinking Path

> - Paperclip is the open source app people use to manage AI agents for
work
> - Runtime skill listing materializes each company skill's files before
handing them to the agent's adapter
> - A materialization failure was swallowed with catch-to-null, and the
skill silently vanished from the runtime while the library still showed
it installed
> - Operators saw "installed", agents saw nothing, and nobody saw the
cause; on claude-local a missing desired skill could even crash the
prompt-bundle hasher
> - This pull request turns both failure paths into structured "missing"
entries with the real error and makes every adapter skip unmountable
entries explicitly
> - The benefit is that a broken skill shows up as broken, with its
cause, instead of not existing

## Linked Issues or Issue Description

**What happened?**

A company skill whose runtime files fail to materialize (deleted source,
missing stored SKILL.md copy, failed version snapshot) disappears from
`listRuntimeSkillEntries` with no trace. Agent skill snapshots report a
generic "not available" with no cause. On claude-local, a desired skill
whose source path does not exist reaches the prompt-bundle hasher, whose
`fs.lstat` throws and can fail the whole run.

**Expected behavior**

The skill appears with `sourceStatus: "missing"` and a `missingDetail`
carrying the underlying error, snapshots and the UI show it as broken,
and adapters skip it at mount time with a logged warning instead of
crashing or dangling-symlinking.

**Steps to reproduce**

Install a local-path skill referenced by an agent, delete its source
directory contents so the stored SKILL.md copy cannot be recovered, and
start a run: before this change the skill vanishes from the runtime set
silently; on claude-local a pinned-but-unmaterializable version can fail
bundle preparation.

## What Changed

- `server/src/services/company-skills.ts` `resolveRuntimeSkillSource`:
both `.catch(() => null)` sites (version snapshot, runtime
materialization) now return the structured `{status: "missing", source,
detail}` shape the deliberate missing branch already used, with the
underlying error message in `detail`.
- `packages/adapter-utils/src/server-utils.ts`:
`isPaperclipSkillSourceMissing` is exported with a doc comment.
- `packages/adapters/claude-local/src/server/execute.ts`: missing
desired skills are filtered out of the prompt bundle and each one logs a
`[paperclip] Warning` with its detail to the run output.
- `cursor-local`, `gemini-local`, `kimi-local`, `opencode-local`,
`pi-local` `execute.ts`: mount loops (and the cursor/gemini injection
calls) skip missing entries instead of symlinking a nonexistent path.

## Verification

- `cd server && npx vitest run
src/__tests__/company-skills-service.test.ts` — new test pins the
missing-with-cause entry for a failed materialization. Nine pre-existing
project-workspace tests in this file fail on my machine at clean
`master` too (environment-specific); their count is unchanged by this
PR.
- `cd server && npx vitest run
src/__tests__/heartbeat-runtime-skills.test.ts
src/__tests__/claude-local-skill-sync.test.ts
src/__tests__/cursor-local-skill-sync.test.ts
src/__tests__/cursor-local-skill-injection.test.ts
src/__tests__/gemini-local-skill-sync.test.ts` — 12 tests pass.
- `cd packages/adapters/claude-local && npx vitest run` — 244 passed, 1
skipped.
- `pnpm run typecheck` clean in server, adapter-utils, and all six
touched adapters.

## Risks

- Runtime skill entry lists grow by the previously dropped entries (now
flagged missing). All shipped consumers either intersect with desired
sets, already handle `sourceStatus: "missing"`, or now skip missing
entries at mount time. The snapshot layer already understood the missing
shape via the `materializeMissing: false` path, so downstream contracts
are unchanged.

## Model Used

- Claude Fable 5 (`claude-fable-5`, Anthropic) with extended thinking
and tool use, via Claude Code.

## 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
- [ ] All Paperclip CI gates are green
- [ ] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge

2026-08-25 13:51:57 -07:00

src

fix(server): surface skill materialization failures instead of dropping the skill (#12146 )

2026-08-25 13:51:57 -07:00

CHANGELOG.md

fix: bound workspace Git scans (#11572 )

2026-08-17 22:11:30 -05:00

package.json

fix(build): enforce Node 24 across Paperclip (#11792 )

2026-08-21 10:17:52 -07:00

README.md

PAPA-430: workspace finalize gates + no-remote-git enforcement (#6969 )

2026-05-29 08:25:29 -07:00

tsconfig.json

…

README.md

@paperclipai/adapter-utils

Shared utilities for Paperclip adapters: process spawning, environment injection, sandbox/SSH transport, workspace sync, and the round-trip helpers that move code between the local execution-workspace cwd and wherever the agent actually runs.

For the adapter-author guide see docs/adapters/creating-an-adapter.md and the in-repo notes at packages/adapters/AUTHORING.md.

No-remote-git contract

The local execution-workspace cwd is the only persistence boundary across runs. No adapter may depend on a git remote for cross-run state.

Adapters that run the agent on a different host should use the SSH round-trip helpers in src/ssh.ts:

prepareWorkspaceForSshExecution({ spec, localDir, remoteDir }) — bundles the local cwd (tracked files, dirty edits, untracked additions, and the git history needed to reconstruct it) to remoteDir before the run starts. Runs with no git remote configured.
restoreWorkspaceFromSshExecution({ spec, localDir, remoteDir, ... }) — syncs the remote cwd back into localDir after the run, including any new commits the agent created. Also runs with no git remote configured.

prepareRemoteManagedRuntime in src/remote-managed-runtime.ts wraps both calls for adapters that want a per-run remote workspace and an automatic restoreWorkspace() finally hook.

The invariant is pinned by the no-remote-git contract case in src/ssh-fixture.test.ts, which asserts that a remote-only commit propagates to the local worktree through the prepare → restore round-trip with no git remote configured at any point. Do not regress that test.