v0.1.2: Packaging, Socket Hardening & Degraded WAL Recovery

Added

• Distribution & Tooling:
  • Homebrew CLI formula (Formula/flowback-cli.rb) and release signing invariant enforcement in CI.
  • Staged Homebrew Cask formula generator (Scripts/generate_cask.sh).
  • Release artifact packager, validator, and checksum generator (validate_release.sh).
• Service Hardening:
  • Enforced Unix domain socket directory permissions (0700) and required session auth token for daemon shutdown.
  • Implemented lifecycle coordinator, stream teardown, and granular launch-at-login status (bd514c0).
• Expanded Test Invariants:
  • Expanded test runner to 182 assertions covering service lifecycle, storage, and IPC invariants (cdcd2d0).

Fixed

• Eliminated AppKit application termination race during fast service shutdown.
• Preserved WAL journals during corruption recovery and surfaced degraded mode in UI (7ea9ef6).

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