v0.4.0

Added

• (mcp) add expanded capability tools
• (describe) expose typed argument metadata
• (packages) fall back to PackageKit when dnf5daemon is absent
• (packages) PackageKit read and mutation operations
• (packages) add PackageKit backend skeleton + signal parsing
• (protocol) add dbus_call_collect for signal-driven PackageKit calls
• (protocol) add DbusSignal parse type for signal frames

Fixed

• (capability) expose output schemas
• (firewall) map dependency and unsupported-API failures to actionable errors
• (cli) emit fez/v1 error envelopes for --json usage and discovery errors
• (cli) hide --dry-run/--force on read-only command help
• (describe) complete plain-text output and generalize --force help
• (capability) include required in service mutation examples
• (e2e) don't abort RHEL 10 provisioning when dnf5daemon-server is absent

Other

• Merge remote-tracking branch 'origin/main' into agents-progressive-discovery
• Merge pull request #81 from major/issue-57-expanded-mcp-tools
• Merge pull request #77 from major/dedup-tier1
• Merge pull request #78 from major/fix-54-typed-describe
• Merge pull request #75 from major/packagekit-fallback
• document the PackageKit fallback backend and test knobs
• (packages) integration suite for the PackageKit fallback backend
• (fake-bridge) add signal-emitting PackageKit arm and scenario knobs
• Merge pull request #72 from major/fix-52-json-errors
• Merge pull request #69 from major/fix-62-63-describe