v0.7.0

Recipes — a knowledge base agents and users share

Some tasks need two servers that know nothing about each other: Kodi's tools are useless until Kodi is running, but ADB can launch it on Android and Remote Admin can start it on a Windows or Linux box. Recipes give agents somewhere to keep that kind of "if X then Y" note, so the next session doesn't have to rediscover it.

• Agents reach recipes through the proxy as recipes__list / get / add / update / remove, and the hub sends server instructions on connect so agents know to consult them before a multi-server task or when a tool fails because a dependency isn't running.
• A new Recipes page searches, adds, edits and deletes notes, refreshing live when an agent writes. Recipes are stored in recipes.json beside settings.json with atomic writes, tight size limits, and quarantine of a corrupt file.
• Two switches control agent access: Let agents use recipes and Let agents add and edit recipes — enforced as proxy tool authorization, so they apply immediately. MCPHUB_RECIPES_ENABLED / MCPHUB_RECIPES_AGENT_EDIT override them for headless deployments.
• For embedders, MCPHub.Proxy gains ILocalToolProvider (hub-native tools advertised, routed, authorized and audited like an upstream's) and MCPHub.Hosting gains ProxyHostOptions.ServerInstructions.

Three new catalogue servers

ADBMCPSharp, KodiMCPSharp and BambuMCPSharp, each verified against its repo config and release zip contents. Note: KodiMCPSharp's default port (5712) currently collides with the SQL server's — change it in Settings if you run both; a new default has been requested upstream.

Fixes and improvements

• An unwritable data directory was previously reported as "MCPHub is already running" (exit 2, no window). MCPHub now tells the two apart and starts unguarded with a warning naming the path.
• The Updates page has an Open install folder button that opens the running executable's folder, ready for swapping in a downloaded build.
• MCPHub refuses to start a second instance unless explicitly asked to (--allow-multiple-instances).

192 tests pass in Release; the solution builds with no warnings.

What's Changed

• Refuse to start a second instance unless asked to by @Wixely in #8
• Recipes knowledge base, three new catalogue servers, v0.7.0 by @Wixely in #9

Full Changelog: v0.6.0...v0.7.0