refactor(actions): split door.ts into a folder (slice 4)

813-line lib/actions/door.ts → lib/actions/door/{connections,operate,self-entry}.ts
('use server') + _guards.ts + _audit.ts + index.ts barrel. All 14 actions
preserved verbatim; lib/door/ (executor/ingest/secret) untouched. tsc 0, tests green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lib/actions/door/index.ts

@@ -0,0 +1,13 @@
+/**
+ * Barrel re-export for the door server actions.
+ *
+ * Split from the original single `door.ts` into section files. This barrel
+ * keeps `@/lib/actions/door` resolving to the same set of exports.
+ *
+ * Do NOT add `'use server'` here. The directive lives on the section files
+ * (connections/operate/self-entry); re-exports preserve the marking.
+ */
+
+export * from './connections'
+export * from './operate'
+export * from './self-entry'