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>

packages/adapters/acpx-local/src/index.ts

@@ -0,0 +1,47 @@
+export const type = "acpx_local";
+export const label = "ACPX (local)";
+
+export const DEFAULT_ACPX_LOCAL_AGENT = "claude";
+export const DEFAULT_ACPX_LOCAL_MODE = "persistent";
+export const DEFAULT_ACPX_LOCAL_PERMISSION_MODE = "approve-all";
+export const DEFAULT_ACPX_LOCAL_NON_INTERACTIVE_PERMISSIONS = "deny";
+export const DEFAULT_ACPX_LOCAL_TIMEOUT_SEC = 0;
+
+export const acpxAgentOptions = [
+  { id: "claude", label: "Claude via ACPX" },
+  { id: "codex", label: "Codex via ACPX" },
+  { id: "custom", label: "Custom ACP command" },
+] as const;
+
+export const agentConfigurationDoc = `# acpx_local agent configuration
+
+Adapter: acpx_local
+
+Use when:
+- The agent should run through Agent Client Protocol via ACPX on the Paperclip host or a managed execution environment.
+- You want one built-in adapter that can target Claude, Codex, or a custom ACP server command.
+- You need Paperclip-managed session identity and live streamed ACP events in later ACPX runtime phases.
+
+Don't use when:
+- You need today's stable Claude Code or Codex CLI wrapper behavior. Use claude_local or codex_local until acpx_local runtime execution is enabled.
+- The host cannot satisfy ACPX's Node >=22.12.0 prerequisite.
+- The agent runtime is not an ACP server and cannot be launched through ACPX.
+
+Core fields:
+- agent (string, optional): claude, codex, or custom. Defaults to claude.
+- agentCommand (string, optional): custom ACP command when agent=custom, or an override for a built-in ACP agent command.
+- mode (string, optional): persistent or oneshot. Defaults to persistent.
+- cwd (string, optional): default absolute working directory fallback for the agent process.
+- permissionMode (string, optional): defaults to approve-all, meaning ACPX permission requests are auto-approved.
+- nonInteractivePermissions (string, optional): fallback behavior when ACPX cannot ask interactively. Supported values are deny and fail.
+- stateDir (string, optional): ACPX state directory. Defaults to a Paperclip-managed company/agent scoped location.
+- instructionsFilePath (string, optional): absolute path to a markdown instructions file used by Paperclip prompt construction.
+- promptTemplate (string, optional): run prompt template.
+- bootstrapPromptTemplate (string, optional): first-run bootstrap prompt template.
+- timeoutSec (number, optional): run timeout in seconds. Defaults to 0, meaning no adapter timeout.
+- env (object, optional): KEY=VALUE environment variables or secret bindings.
+
+Dependency decision:
+- acpx_local declares direct dependencies on acpx, @agentclientprotocol/claude-agent-acp, and @zed-industries/codex-acp so the built-in adapter has deterministic package resolution instead of relying on globally installed ACP commands.
+- ACPX currently requires Node >=22.12.0. Paperclip keeps the repo-wide Node >=20 engine and surfaces the stricter runtime prerequisite through acpx_local diagnostics.
+`;