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.
