dangernoodle-io / breadboard / 30503878585

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feat: codegen grammar extension for parameterized calls and consumer manifests (#1139)

- add args= to // bbtool:init: splices a raw C argument list verbatim into
  the generated call (whitespace-free, mutually exclusive with server=true
  and consumes=) -- unblocks real components like bb_wifi_prov_autoinit
  that take non-trivial arguments
- add _emit_args_call in commands.wire, reusing the existing
  _guard_requires/_emit_provides_avail wrappers unchanged so tier=/order=/
  requires=/provides= behave identically regardless of emission path
- add --consumer-manifest <path> to bbtool codegen: parses one extra file
  (e.g. an example's own main/) for the same markers and merges its
  entries into the wire graph before topo-sort, satisfying B1-731 --
  a distinct code path from component discovery, never joining the
  component namespace or the REQUIRES closure; absent by default so
  output stays byte-identical to today
- scope the consumer-manifest read's OSError catch to that read alone
  (a missing/unreadable manifest file gets a clean one-line error)
  instead of wrapping the whole resolution try block, so an OSError from
  any pre-existing path (board resolution, composition resolve, header
  collection, topo-sort/render) keeps its original traceback behavior
- add a unit test proving a manifest-declared // bbtool:provides can
  satisfy a component's consumes= (the documented but previously
  untested direction), and a test proving the OSError scoping doesn't
  swallow a pre-existing path's OSError
- document the new grammar/flag in scripts/bbtool/README.md

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