docs: Link uv references to install instructions

why: Docs assumed uv was installed but only linked to the landing page,
not the installation guide.
what:
- README: Add uv with install link to requirements line
- installation.md: Update uv link to installation page
- troubleshooting.md: Link "install uv" to installation page
- contributing.md: Update uv reference link to installation page

Author: tony

README.md

@@ -24,7 +24,7 @@ Give your AI agent hands inside the terminal — create sessions, run commands,
 
 ## Quickstart
 
-**Requirements:** Python 3.10+, tmux installed and on `$PATH`.
+**Requirements:** Python 3.10+, tmux on `$PATH`, [uv](https://docs.astral.sh/uv/) ([install](https://docs.astral.sh/uv/getting-started/installation/)).
 
 Install and run:
 

docs/installation.md

@@ -6,7 +6,7 @@
 
 - Python 3.10+
 - tmux >= 3.2a
-- [uv](https://docs.astral.sh/uv/) (recommended) or pip
+- [uv](https://docs.astral.sh/uv/) ([install](https://docs.astral.sh/uv/getting-started/installation/)) — recommended, or pip
 
 ## Recommended: uvx
 

docs/project/contributing.md

@@ -3,7 +3,7 @@
 Install [git] and [uv]
 
 [git]: https://git-scm.com/
-[uv]: https://docs.astral.sh/uv/
+[uv]: https://docs.astral.sh/uv/getting-started/installation/
 
 Clone:
 

docs/topics/troubleshooting.md

@@ -19,7 +19,7 @@ Symptom-based guide. Find your problem, follow the steps.
    You should see no output (it's waiting for stdio input). Press Ctrl+C to stop.
 
 2. Check your client config points to the right command. Common issues:
-   - `uvx` not in PATH — install [uv](https://docs.astral.sh/uv/)
+   - `uvx` not in PATH — [install uv](https://docs.astral.sh/uv/getting-started/installation/)
    - Typo in `"command"` or `"args"` in JSON config
    - TOML config syntax errors (Codex CLI)