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_config/fish/functions/lc-elir.fish

@@ -1,16 +0,0 @@
-function lc-elir -d "fzf-pick LeetCode solution files and run /leetcode-eli5 on each via omp"
-    set -l root (count $argv > /dev/null; and echo $argv[1]; or echo .)
-    # Match only numbered problem files: 1365.some-slug.js anywhere in the tree
-    set -l files (fd --type f '^\d+\..+\.(js|ts)$' $root \
-        | fzf --multi \
-              --prompt='eli5> ' \
-              --delimiter=/ \
-              --with-nth=-3.. \
-              --preview 'bat --color=always --line-range=:40 {}' \
-              --preview-window=right:60%)
-    test -z "$files"; and return 1
-    for f in $files
-        echo "── /leetcode-eli5 $f"
-        omp -p "/leetcode-eli5 $f"
-    end
-end