feat: add CW-026 Local Voice plugin

docs/RECOVERY.md

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+# Recovery and private asset policy
+
+CW-026 uses a split distribution:
+
+- **Public Gitea:** redistributable source, profiles, schemas, tests, and docs.
+- **Private Google Drive:** authorized voice assets, the tested Metal wheel,
+  installable plugin packages, checksums, and recovery manifests.
+- **External model source:** exact Candle model repository and verified hashes.
+
+## Private recovery folder
+
+`CW-026 — Local Voice`
+
+https://drive.google.com/drive/folders/1bcgkABj-JGavyFHRqSj2gwZqhnPHBAhk
+
+The private folder is visible only to authorized MPM staff. It is the recovery
+source of truth for the machine-specific configuration.
+
+## Restore sequence
+
+1. Restore the plugin source or installable package.
+2. Recreate the Python 3.11 environment.
+3. Install the tested platform wheel.
+4. Download and verify the exact model.
+5. Extract the authorized voice-assets archive into the runtime.
+6. Run `doctor`.
+7. Run the acceptance suite.
+8. Configure calling skills, such as Donna, to use the Local Voice dependency.
+
+Never delete the working runtime during recovery preparation. Copy assets into
+the private archive and verify the archive before treating it as a backup.