feat(dc_bridge): bless vector as a Destination type

[Minipada]

Summary

• Blesses vector as a Destination type alongside postgres, s3, file and console (ADR-0003), so a robot's edge-aggregator hop is validated ROS-param config instead of hand-written passthrough TOML that DC never parses.
• vector_from_raw requires host and port (no defaults — unlike postgres's dev-friendly 127.0.0.1/5432, there's no sensible address to assume for another Shipper) and validates the port range 1-65535, reusing the same RawDestinationParams::host/port fields postgres already declares — no new ROS param plumbing needed in bridge_node.cpp.
• render_sink emits type = "vector", address = "<host>:<port>", and the same disk buffer every other blessed sink gets — the identical shape already proven end-to-end by tools/e2e/params/e2e_limits_forward_sink.toml's hand-written passthrough sink (verified against the pinned Vector build; see that file's header), now generated and validated by dc_bridge itself instead of hand-written TOML.
• Passthrough (custom_config_files) is untouched for every other sink type.
• Updates doc/src/dc/destinations.md (type table + example) and every other doc page that enumerated the blessed set as exactly four types.

Test plan

• prek run --all-files --skip build-doc passes (clang-format, REUSE, yaml/toml lint, etc.)
• New dc_bridge render-test coverage (render_test.cpp), matching the existing pattern for postgres/s3/file:
  • VectorDestinationForwardsToAggregator — gold-file render test (test/fixtures/render/vector_destination.toml)
  • VectorFromRawRejectsMissingHost / RejectsMissingPort / RejectsOutOfRangePort / BuildsAddress
  • DestinationFromRawBuildsS3FileConsole extended to cover vector
• colcon test --packages-select dc_bridge — not run locally (this sandbox has no ROS 2 install and no network access to fetch vector_vendor/aws_sdk_vendor for a from-scratch workspace build); CI's build-workspace job covers this.

Closes #443

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.00%. Comparing base (2b2051b) to head (f7863e8).

Additional details and impacted files

@@            Coverage Diff             @@
##            jazzy     #455      +/-   ##
==========================================
+ Coverage   70.93%   71.00%   +0.08%     
==========================================
  Files         119      119              
  Lines        7401     7419      +18     
==========================================
+ Hits         5249     5267      +18     
  Misses       2152     2152              

Flag	Coverage Δ
cpp-jazzy	71.00% <100.00%> (+0.08%)	⬆️

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