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_git-summary

@@ -0,0 +1,20 @@
+#!/bin/sh
+# Aggregate all AGENTS.md files in the current git repo via code2prompt.
+repo_root=$(git rev-parse --show-toplevel 2>/dev/null)
+if [ -z "$repo_root" ]; then
+    echo "git-summary: not inside a git repository" >&2
+    exit 1
+fi
+
+template=$HOME/.config/code2prompt/agents-md.hbs
+if [ ! -f "$template" ]; then
+    echo "git-summary: template not found at $template" >&2
+    exit 1
+fi
+
+# Pass through any extra flags (e.g. --output-file, --tokens)
+exec code2prompt "$repo_root" \
+    --include "AGENTS.md" \
+    --include "**/AGENTS.md" \
+    --template "$template" \
+    "$@"