chore: update dotfiles with new tool configs and pi settings

- Add configs for goose, herdr, ostt, fabric, zero, gnupg
- Restructure pi models.json (dupont, obelix, bianca, cloudflare)
- Update pi settings with new provider lineup, subagent overrides
- Add pi permission system, search config
- Add desktop entries (RampClient, terminal, tmux)
- Add tmux-open script, rename battery.sh -> battery
- Refactor fish config (simplify conditionals, fix nvim aliases)
- Switch worktrunk commit command from opencode to pi
- Update mise.toml with new tool symlinks
- Fix mise auth.json path reference

config/pi/agent/search-config.json

@@ -0,0 +1,13 @@
+{
+  "enabled": true,
+  "searchEnabled": true,
+  "fetchEnabled": true,
+  "providerOverrides": {
+    "claude-bridge": {
+      "searchEnabled": false
+    },
+    "opencode": {
+      "searchEnabled": true
+    }
+  }
+}