Add ACPX local adapter runtime (#4893)

## Thinking Path

> - Paperclip orchestrates AI-agent companies through a control plane
that can start, supervise, and recover agent runs.
> - Local adapters are the bridge between Paperclip issues and concrete
agent runtimes such as Claude, Codex, and other ACP-compatible tools.
> - The roadmap calls out broader “bring your own agent” and claw-style
agent support, and ACPX gives Paperclip one path to normalize multiple
ACP agents behind a single adapter.
> - The branch needed to become one reviewable PR against current
`paperclipai/paperclip:master`, without carrying stale base conflicts or
generated lockfile churn.
> - This pull request adds an experimental built-in `acpx_local`
adapter, integrates it through the server/CLI/UI adapter surfaces, and
adds regression coverage for runtime execution, skill sync, stream
parsing, diagnostics, and log redaction.
> - The benefit is that Paperclip can run Claude/Codex/custom ACP agents
through ACPX while keeping operator configuration, skills, logging, and
transcript rendering inside the existing adapter model.

## What Changed

- Added `@paperclipai/adapter-acpx-local` with server execution, config
schema, ACPX session handling, CLI formatting, UI config helpers, and
stdout parsing.
- Registered `acpx_local` across CLI, server, shared constants, UI
adapter metadata, adapter capabilities, and agent creation/editing
surfaces.
- Added ACPX runtime execution support with persistent sessions,
local-agent JWT environment handling, skill snapshots, runtime skill
materialization, and isolation/security regressions.
- Added ACPX adapter diagnostics and marked the adapter experimental in
the UI.
- Added command/env secret redaction for resolved command metadata in
adapter-utils, server event storage, and the Agent Detail invocation UI.
- Added Storybook coverage for ACPX config, transcript rendering, and
skill states, plus PR screenshots under `docs/pr-screenshots/pap-2944/`.
- Rebased the branch onto current `public-gh/master`; `pnpm-lock.yaml`
is intentionally not included and there are no migration/schema changes.

## Verification

- `pnpm exec vitest run
packages/adapters/acpx-local/src/server/execute.test.ts
packages/adapters/acpx-local/src/server/test.test.ts
packages/adapters/acpx-local/src/cli/format-event.test.ts
packages/adapters/acpx-local/src/ui/parse-stdout.test.ts
packages/adapter-utils/src/server-utils.test.ts
server/src/__tests__/redaction.test.ts
server/src/__tests__/acpx-local-execute.test.ts
server/src/__tests__/acpx-local-skill-sync.test.ts
server/src/__tests__/acpx-local-adapter-environment.test.ts
server/src/__tests__/adapter-routes.test.ts
server/src/__tests__/agent-skills-routes.test.ts
ui/src/adapters/metadata.test.ts` — 12 files, 87 tests passed.
- `pnpm --filter @paperclipai/adapter-acpx-local typecheck` — passed.
- `pnpm --filter @paperclipai/server typecheck` — passed.
- `pnpm --filter @paperclipai/ui typecheck` — passed.
- Confirmed PR diff does not include `pnpm-lock.yaml`, database schema
files, or migrations.

Screenshots:

![ACPX Claude skills
light](https://github.com/cryppadotta/paperclip-1/blob/PAP-2944-acpx-make-a-claude_local-adapter-that-uses-acpx-instead/docs/pr-screenshots/pap-2944/skills-claude-light.png?raw=true)
![ACPX Claude skills
dark](https://github.com/cryppadotta/paperclip-1/blob/PAP-2944-acpx-make-a-claude_local-adapter-that-uses-acpx-instead/docs/pr-screenshots/pap-2944/skills-claude-dark.png?raw=true)
![ACPX custom skills
light](https://github.com/cryppadotta/paperclip-1/blob/PAP-2944-acpx-make-a-claude_local-adapter-that-uses-acpx-instead/docs/pr-screenshots/pap-2944/skills-custom-light.png?raw=true)

## Risks

- Medium risk: this introduces a new built-in adapter package and
touches runtime execution, adapter registration, agent config, skills,
and transcript rendering.
- ACPX and ACP agent behavior can vary by installed tool versions; the
adapter is marked experimental to set operator expectations.
- `pnpm-lock.yaml` is excluded per repository PR policy, so dependency
lock refresh must be handled by the repo’s automation or maintainers.
- No database migration risk: no schema or migration files changed.

> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.

## Model Used

- OpenAI Codex coding agent based on GPT-5, with repository tool use,
shell execution, git operations, and local verification. Exact hosted
context window was not exposed in this environment.

## 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 run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge

---------

Co-authored-by: Paperclip <noreply@paperclip.ing>

server/src/__tests__/redaction.test.ts

@@ -84,4 +84,51 @@ describe("redaction", () => {
     expect(result).not.toContain(githubToken);
     expect(result).not.toContain(jwt);
   });
+
+  it("redacts inline secrets from command metadata without hiding safe command text", () => {
+    const input = {
+      command: "custom-acp --token ghp_example_secret env OPENAI_API_KEY=sk-live-example custom-acp",
+      commandArgs: ["--safe", "ok", "--token", "ghp_arg_secret", "--api-key=sk-inline-example"],
+      env: {
+        PAPERCLIP_RESOLVED_COMMAND: "env OPENAI_API_KEY=sk-live-example custom-acp --token ghp_example_secret",
+        SAFE_VALUE: "visible",
+      },
+    };
+
+    const result = redactEventPayload(input);
+
+    expect(result?.command).toBe(
+      `custom-acp --token ${REDACTED_EVENT_VALUE} env OPENAI_API_KEY=${REDACTED_EVENT_VALUE} custom-acp`,
+    );
+    expect(result?.commandArgs).toEqual([
+      "--safe",
+      "ok",
+      "--token",
+      REDACTED_EVENT_VALUE,
+      `--api-key=${REDACTED_EVENT_VALUE}`,
+    ]);
+    expect(result?.env).toEqual({
+      PAPERCLIP_RESOLVED_COMMAND:
+        `env OPENAI_API_KEY=${REDACTED_EVENT_VALUE} custom-acp --token ${REDACTED_EVENT_VALUE}`,
+      SAFE_VALUE: "visible",
+    });
+  });
+
+  it("redacts non-string command args after secret flags", () => {
+    const result = redactEventPayload({
+      commandArgs: ["--api-key", { nested: "secret-value" }, "safe-next"],
+    });
+
+    expect(result?.commandArgs).toEqual(["--api-key", REDACTED_EVENT_VALUE, "safe-next"]);
+  });
+
+  it("does not treat bare args payloads as command args", () => {
+    const result = redactEventPayload({
+      args: ["--api-key", "not-a-command-secret"],
+      argv: ["--api-key", "command-secret"],
+    });
+
+    expect(result?.args).toEqual(["--api-key", "not-a-command-secret"]);
+    expect(result?.argv).toEqual(["--api-key", REDACTED_EVENT_VALUE]);
+  });
 });