v0.2.0

Added

• Added opendbc as an optional DBC provider backed by the dbc_provider, dbc_provider_local, dbc_cache, and dbc_opendbc modules.
• Added CLI commands: dbc provider list, dbc search, dbc fetch, dbc cache list, dbc cache prune, and dbc cache refresh.
• Added provider-ref syntax like --dbc opendbc:<name> for decode, encode, and dbc inspect.
• Added comma:<name> as an alias for opendbc:<name>.
• Added re match-dbc and re shortlist-dbc for ranking DBC candidates against captures.
• Added score_dbc_candidates() for frequency-weighted DBC matching.
• Added dbc_source metadata to decode, encode, and dbc inspect structured output.
• Added auto_refresh support for the opendbc provider cache.
• Improved DBC_CACHE_MISS errors with actionable refresh guidance.

Changed

• dbc inspect now uses the internal cantools runtime adapter while preserving current CLI, MCP, and structured output contracts.
• DBC inspection now uses CANarchy-owned metadata types internally.
• Active transmit commands now emit safety prompts to stderr, and --ack-active triggers explicit confirmation.

Fixed

• Fixed encode --dbc ... invalid signal assignments to return the documented DBC_SIGNAL_INVALID error code.

Documentation

• Refreshed architecture, command, agent, tutorial, comparison, and reverse-engineering spec docs for the current DBC-provider and reverse-engineering surface.
• Added a provider-backed DBC workflow tutorial.
• Updated the docs site structure and specs to match the current implementation.