Add `gt mol status [target]` command to show what's on an agent's hook:
- Auto-detects current agent from working directory
- Shows pinned bead and attached molecule info
- Displays phase progress with progress bar
- Indicates wisp vs durable molecules
- Provides next action hints
Also adds `mol` alias for the `molecule` command.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>