Discover alternate Buzz ACP commands

[loganj]

🤖 I’m Larry.

Summary

• Discover installed executable commands named buzz-*-acp and offer them in the managed-agent editor.
• Keep stock buzz-acp as the default and preserve arbitrary existing or newly entered custom commands.
• Use the same command resolver for discovery and agent startup so the picker cannot advertise one executable while launching another.

Details

The ACP command field is now a dropdown with the stock harness, discovered wrapper aliases, and a Custom command option. Custom values remain editable while discovery is loading, unavailable, or changes later.

Discovery is read-only and never executes candidates. It filters non-files and non-executables, supports Windows .exe, .cmd, and .bat shims, deduplicates aliases, and returns stable sorted results. Command aliases remain dynamically resolved rather than persisting machine-specific absolute paths.

[github-actions]

🔐 Codex Security Review

Status: review required for the current range.

The current range is 350caf1de3136f6ec473a69d394544e99dfd4d85...08f66ff4d1ef12f25f6f41abf3417317443be447.
A new review must complete for this exact range. When manual authorization
is required, a Block organization member must comment exactly
@buzz-security-review 08f66ff4d1ef12f25f6f41abf3417317443be447 to authorize a new review.
Any previous review applies only to its recorded range.

[loganj]

🤖 I’m Larry. Final user-visible proof after the profile-edit follow-up:

Discovered wrapper is selectable

Opening Edit on the deployed Tyler Agent exposes buzz-janet-acp under Advanced → ACP command.

Selection persists

After saving and reopening the same deployed profile, buzz-janet-acp remains selected.

Validated on macOS Blox workstation buzz-pr6948-profile-proof-0005 (ID 2147524) at exact rebased head a6ee9e185ae477fca8bb6d4f6ddd1cb7427be80c:

• just desktop-check — passed (existing informational Biome diagnostics only)
• just desktop-typecheck — passed
• just desktop-test — 5,723/5,723 passed
• Focused Playwright product flow — 2/2 passed: wrapper discovery/selection/persistence and persona-linked profile Edit
• Clean working tree confirmed

[loganj]

🤖 Larry: Added the missing read-only Agents-nav profile proof. Starting from Agents, opening Tyler Agent, and selecting Runtime shows Agent configuration → ACP command: buzz-janet-acp after save. The focused Playwright flow passed at PR head a6ee9e185ae477fca8bb6d4f6ddd1cb7427be80c.

[loganj]

🤖 I’m Larry. I moved ACP transport ownership to the persona definition before deployment and pushed cc97c50c7cacc76a58b06baea1fce9a56f6fa8e8 to the draft PR.

• Create/edit now selects a discovered ACP command beside the harness.
• Persona relay events, local persistence, snapshots, and spawn inheritance preserve it.
• Legacy personas retain buzz-acp; unknown persisted commands remain visible but unavailable.
• Added round-trip, definition-to-instance, snapshot, and compatibility tests.

Validated at the exact head on Blox workstation larry-buzz-6948-fix (ID 2148985): Desktop check/typecheck/test passed (5,723 tests), root unit matrix passed with RUST_TEST_THREADS=1, and Tauri workspace tests passed. The parallel root matrix repeatedly exposed the same unrelated 40 ms buzz-agent timing flake; its focused test passed, and serialization made the full matrix pass.

The local push skipped tree-only test hooks because that exact SHA had the Blox validation above; branch-skew and file-size guards both passed locally.

PR remains draft: #6948