feat(tui): support MCP resources - #35658

Summary

• load Location-scoped MCP resource catalogs and refresh them on resource/status events
• add MCP resources to @ autocomplete with stable server, URI, and originating Location identity
• preserve resource references in prompt history and read current contents only when submitting
• materialize text/blob resource contents into normal inline attachments before session creation
• await command submission failures so resource prompts are retained for retry
• regenerate the compatibility V2 SDK event/types surface still consumed by the TUI

Stacked on #35657, which is stacked on #35656. MCP resource tools, template parameter UI, app/web migration, and long-lived resource viewers remain excluded.

Testing

• bun test --only-failures in packages/tui (214 passed, 1 skipped)
• bun typecheck in packages/tui
• bun test and bun typecheck in packages/sdk/js
• workspace bun typecheck (31 packages)
• git diff --check