Update Nix Flake Input

Update a specific flake input to its latest version, verify the build, and commit.

Workflow

Verify the input exists in flake.nix: Read flake.nix and confirm the user-specified input name corresponds to an actual input. The user may refer to it by a partial name or alias - find the correct input name in the inputs attribute set.
Update flake.lock for the specified input:
```
nix flake update <input-name>
```
Build NixOS configuration to verify:
```
nixos-rebuild build --flake ".#torrent"
```
If the build fails, investigate and fix the issue before proceeding.
Stage and commit:
```
git add flake.lock && git commit -m "feat(<scope>): update <input-name>"
```
The <scope> should reflect the affected experience/module area, not the input name itself. Examples:
- llm-agents.nix → feat(ai): update llm-agents.nix
- lazyvim → feat(lazyvim): update lazyvim
- anyrun → feat(anyrun): update anyrun
- fenix → feat(rust): update fenix

Update a specific flake input to its latest version, verify the build, and commit.

Verify the input exists in flake.nix: Read flake.nix and confirm the user-specified input name corresponds to an actual input. The user may refer to it by a partial name or alias - find the correct input name in the inputs attribute set.
Update flake.lock for the specified input:
```
nix flake update <input-name>
```
Build NixOS configuration to verify:
```
nixos-rebuild build --flake ".#torrent"
```
If the build fails, investigate and fix the issue before proceeding.
Stage and commit:
```
git add flake.lock && git commit -m "feat(<scope>): update <input-name>"
```
The <scope> should reflect the affected experience/module area, not the input name itself. Examples:
- llm-agents.nix → feat(ai): update llm-agents.nix
- lazyvim → feat(lazyvim): update lazyvim
- anyrun → feat(anyrun): update anyrun
- fenix → feat(rust): update fenix