Add ~/.omp config; nvim git-repo external; ya pkg install hook

- dot_omp: agent config/keybindings/mcp/themes/commands + loop defs,
  goals, run-loop.sh; dotstate config.yml symlink materialized; dbs,
  logs, sessions, memories, blobs, caches, .env (secret), and
  managed-skills excluded
- .chezmoiexternal.toml: prdlk/nvim as git-repo external — no
  refreshPeriod + ff-only pull, local checkout wins over remote
- yazi plugins: vendored source copies dropped (target-ignored already);
  package.toml is the manifest, installed via run_onchange ya pkg
  install hook; stale piper/easyjump pins bumped to match live content
- herdr: plugins/github checkout, logs, session.json, .bak,
  release-notes dropped from sync (herdr-managed machine state)

dot_config/yazi/package.toml

@@ -15,8 +15,8 @@ hash = "187cc58ba7ac3befd49c342129e6f1b6"
 
 [[plugin.deps]]
 use = "yazi-rs/plugins:piper"
-rev = "5c7973c"
-hash = "e0d59bd47866a6a574c74574097e5070"
+rev = "3f2b882"
+hash = "f23ecc89ce0f9eeefdd4cea14e2a9ba7"
 
 [[plugin.deps]]
 use = "Rolv-Apneseth/starship"
@@ -25,8 +25,8 @@ hash = "7de446280b1ba8c49ffd86dbc24bbbe6"
 
 [[plugin.deps]]
 use = "mikavilpas/easyjump.yazi:easyjump"
-rev = "5bd5fa7"
-hash = "b976709df0f6d3341736f053e87b2b8"
+rev = "a2a7373"
+hash = "6f8b9e41dde4ae29d958d4cdc829c121"
 
 [[plugin.deps]]
 use = "cap153/tv"