Enhance PocketBase bot commands & revalidation

Add frontend revalidation and richer command handling for the PocketBase GitHub bot. Key changes:

- Expose FRONTEND_URL and REVALIDATE_SECRET to workflow env and add a best-effort revalidate() helper to ping the frontend after edits.
- Introduce shared parsing/helpers: parseKVPairs, parseTokens, readJsonBlob, formatNotesList, formatMethodsList, and other utilities to centralize logic.
- Add an "info" subcommand to display script details, links, credentials, install methods and notes.
- Improve note handling (add/edit/remove) to use shared parsers and call revalidate after updates; tweak messages and reactions.
- Expand install method management: support add/remove/edit operations, new method fields (cpu, ram, hdd, os, version, config_path, script), validation of unknown fields, and better formatting. Persist install_methods_json as JSON (not stringified JSON) when PATCHing.
- Replace ad-hoc field parsers with the shared key=value parser for field updates and SET handling; call revalidate after SET/field patches.
- Update help text and minor message wording/formatting.
- In push-json-to-pocketbase workflow, remove writing config_path from pushed payload.

These changes aim to make the bot more robust, easier to extend, and ensure frontend caches are refreshed after data changes.

.github/workflows/push-json-to-pocketbase.yml

@@ -170,7 +170,6 @@ jobs:
               website: data.website,
               logo: data.logo,
               description: data.description,
-              config_path: data.config_path,
               default_user: (data.default_credentials && data.default_credentials.username) || data.default_user || null,
               default_passwd: (data.default_credentials && data.default_credentials.password) || data.default_passwd || null,
               is_dev: false