CLI proof — after — 9d168e0788
Linux; real server and CLI; fresh synthetic data; replay provider
$RUN and $APP replace private paths.

$ t3 project add demo --title Demo
Added project 1bf65bc8-d190-40b9-86dc-17af4f9dceca (Demo) at $RUN/demo.

[exit 0]

$ t3 thread start demo "Create a worktree." --worktree main --wait (replay provider)
{"threadId":"mcp:98c643f4-38be-483c-a9ed-f678ba2e527a","runId":"run:thread:mcp%3A98c643f4-38be-483c-a9ed-f678ba2e527a:ordinal:1","status":"completed","reply":"## Done\n\nI added `clamp` next to `sum` and the tests pass.\n\n- Reads the manifest first\n- Asks before it writes\n- Streams a terminal result\n\n```ts\nclamp(12, 0, 10); // 10\nclamp(-3, 0, 10); // 0\n```\n\n| Step | Tool | Result |\n| --- | --- | --- |\n| Read | `read` | 1 file |\n| Edit | `edit` | +4 lines |\n| Test | `execute` | 12 passed |\n\nThis turn is a replay. It costs nothing, so send it again as often as you need.","error":null}

[exit 0]

$ t3 thread show <seed-thread>
Worktree seed
mcp:98c643f4-38be-483c-a9ed-f678ba2e527a  completed  Replay provider (recorded response)
t3/create-worktree  $RUN/home/worktrees/demo/t3-8fbe865e-0fbbe00cff94fc2d

[user]
Create a worktree.

[assistant]
The project has a single math module. I will add a `clamp` helper beside `sum`.



[assistant]
## Done

I added `clamp` next to `sum` and the tests pass.

- Reads the manifest first
- Asks before it writes
- Streams a terminal result

```ts
clamp(12, 0, 10); // 10
clamp(-3, 0, 10); // 0
```

| Step | Tool | Result |
| --- | --- | --- |
| Read | `read` | 1 file |
| Edit | `edit` | +4 lines |
| Test | `execute` | 12 passed |

This turn is a replay. It costs nothing, so send it again as often as you need.

[exit 0]

$ t3 thread list  # worktree root
mcp:98c643f4-38be-483c-a9ed-f678ba2e527a  completed    Worktree seed

[exit 0]

$ t3 thread start . "Reply with the word ok." --wait  # worktree root; replay provider
{"threadId":"mcp:2f7ab659-8ee7-4723-adc5-7b6060cc0e95","runId":"run:thread:mcp%3A2f7ab659-8ee7-4723-adc5-7b6060cc0e95:ordinal:1","status":"completed","reply":"## Done\n\nI added `clamp` next to `sum` and the tests pass.\n\n- Reads the manifest first\n- Asks before it writes\n- Streams a terminal result\n\n```ts\nclamp(12, 0, 10); // 10\nclamp(-3, 0, 10); // 0\n```\n\n| Step | Tool | Result |\n| --- | --- | --- |\n| Read | `read` | 1 file |\n| Edit | `edit` | +4 lines |\n| Test | `execute` | 12 passed |\n\nThis turn is a replay. It costs nothing, so send it again as often as you need.","error":null}

[exit 0]

$ t3 thread list --project pkg/a.txt  # worktree root
mcp:2f7ab659-8ee7-4723-adc5-7b6060cc0e95  completed    Resolved from worktree root
mcp:98c643f4-38be-483c-a9ed-f678ba2e527a  completed    Worktree seed

[exit 0]

$ t3 thread list  # worktree subdirectory
mcp:2f7ab659-8ee7-4723-adc5-7b6060cc0e95  completed    Resolved from worktree root
mcp:98c643f4-38be-483c-a9ed-f678ba2e527a  completed    Worktree seed

[exit 0]

$ t3 thread start . "Reply with the word ok." --wait  # worktree subdirectory; replay provider
{"threadId":"mcp:dc7c365d-be32-4716-bef1-0f3abce82a07","runId":"run:thread:mcp%3Adc7c365d-be32-4716-bef1-0f3abce82a07:ordinal:1","status":"completed","reply":"## Done\n\nI added `clamp` next to `sum` and the tests pass.\n\n- Reads the manifest first\n- Asks before it writes\n- Streams a terminal result\n\n```ts\nclamp(12, 0, 10); // 10\nclamp(-3, 0, 10); // 0\n```\n\n| Step | Tool | Result |\n| --- | --- | --- |\n| Read | `read` | 1 file |\n| Edit | `edit` | +4 lines |\n| Test | `execute` | 12 passed |\n\nThis turn is a replay. It costs nothing, so send it again as often as you need.","error":null}

[exit 0]

$ t3 thread list --project a.txt  # worktree subdirectory
mcp:dc7c365d-be32-4716-bef1-0f3abce82a07  completed    Resolved from worktree subdirectory
mcp:2f7ab659-8ee7-4723-adc5-7b6060cc0e95  completed    Resolved from worktree root
mcp:98c643f4-38be-483c-a9ed-f678ba2e527a  completed    Worktree seed

[exit 0]

$ git worktree add other-checkout

[exit 0]

$ t3 project add other-checkout --title Other-checkout
Added project 3c67abb4-a612-43c1-8581-656a141fde12 (Other checkout) at $RUN/other-checkout.

[exit 0]

$ t3 thread list  # ambiguous shared repository
'.' is in a git worktree shared by several projects: Demo (1bf65bc8-d190-40b9-86dc-17af4f9dceca), Other checkout (3c67abb4-a612-43c1-8581-656a141fde12). Pass a project id instead.

[exit 1]