shell: fish functions -> ~/.local/bin executables + bash/zsh ports; manage ~/.agents

- 16 cross-shell utilities converted to sh/bash chezmoi executables:
  ai c2p cp-appid extract_agents fab gdc gh-sonr-org-migrate ghg-clone
  ghn gho git-summary launch_omp_livediff_overlay lc-elir mdcp mdp pj
  (ghg-clone not named ghg: unrelated cargo binary owns that name)
- cwd/history helpers stay per-shell: yy c cd clip-last + ghg/ghn/gho
  cd-wrappers in bash/functions/ and zsh/functions/, loaded by rc files
- fish keeps only shell-state functions; converted ones now hit PATH
- cp-appid ignore gating moved to .local/bin path
- dot_agents/skills: 82 skills materialized from dotstate storage so
  dot_claude skill symlinks resolve on fresh bootstrap; dotstate
  profile/symlinks.json released .agents/skills .bashrc .zshrc

dot_agents/skills/linear-cli/references/project-update.md

@@ -0,0 +1,65 @@
+# project-update
+
+> Manage project status updates
+
+## Usage
+
+```
+Usage:   linear project-update
+
+Description:
+
+  Manage project status updates
+
+Options:
+
+  -h, --help           - Show this help.                      
+  --workspace  <slug>  - Target workspace (uses credentials)  
+
+Commands:
+
+  create, c  <projectId>  - Create a new status update for a project
+  list, l    <projectId>  - List status updates for a project
+```
+
+## Subcommands
+
+### create
+
+> Create a new status update for a project
+
+```
+Usage:   linear project-update create <projectId>
+
+Description:
+
+  Create a new status update for a project
+
+Options:
+
+  -h, --help                   - Show this help.                                    
+  --workspace        <slug>    - Target workspace (uses credentials)                
+  --body             <body>    - Update content (inline)                            
+  --body-file        <path>    - Read content from file                             
+  --health           <health>  - Project health status (onTrack, atRisk, offTrack)  
+  -i, --interactive            - Interactive mode with prompts
+```
+
+### list
+
+> List status updates for a project
+
+```
+Usage:   linear project-update list <projectId>
+
+Description:
+
+  List status updates for a project
+
+Options:
+
+  -h, --help            - Show this help.                                   
+  --workspace  <slug>   - Target workspace (uses credentials)               
+  --json                - Output as JSON                                    
+  --limit      <limit>  - Limit results                        (Default: 10)
+```