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_local/bin/executable_gho

@@ -0,0 +1,20 @@
+#!/bin/sh
+# Pick a ghq repo or an Obsidian vault with fzf (tab toggles the list);
+# prints the directory for the shell wrapper to cd into.
+vaults="$HOME/Documents/Obsidian/Personal $HOME/Documents/Obsidian/Walletbase $HOME/Documents/Obsidian/Research"
+
+# fzf runs bind actions with $SHELL -c; pin it to sh so the transform
+# snippet below is interpreted consistently regardless of login shell.
+selection=$(ghq list | SHELL=/bin/sh fzf --prompt="repo: " --tiebreak=end \
+    --bind "tab:transform:if [ \"\$FZF_PROMPT\" = 'repo: ' ]; then
+            echo \"change-prompt(vault: )+reload(printf '%s\\n' $vaults)\"
+        else
+            echo 'change-prompt(repo: )+reload(ghq list)'
+        fi") || exit 1
+[ -n "$selection" ] || exit 1
+
+# Vault entries are absolute paths; ghq entries are host/user/repo
+case "$selection" in
+    /*) printf '%s\n' "$selection" ;;
+    *) printf '%s\n' "$(ghq root)/$selection" ;;
+esac