MCA v0.1.0-alpha.3

MCA v0.1.0-alpha.3

Local API persona hotfix for third-party OpenAI-compatible clients.

Highlights

• Fixed local API requests losing the current MCA persona/system prompt when a
  client does not send its own system message.
• Preserved third-party character-card system messages so client-provided
  personas are not overwritten by MCA defaults.
• Persisted generation parameters across app/model reloads, including system
  prompt, sampling settings, context size, thread count, and reasoning mode.
• Unified the AIDL and HTTP local API request parser so both paths share the
  same OpenAI-compatible behavior.
• Added unit tests for persona inheritance, third-party character-card
  precedence, and generation-parameter round trips.

Validation

• :api:local:testDebugUnitTest
• :core:engine:testDebugUnitTest
• :app:assembleDebug
• Device smoke test with OpenAI-compatible /v1/models and
  /v1/chat/completions.
• Verified both non-streaming JSON and stream=true SSE responses preserve the
  third-party character-card system message.

Known Limits

• A local chat model still must be loaded before local API chat requests can
  complete.
• Local image generation remains experimental.