docs(p10-3): task spec for Tier 3 paragraph + line-window fallback chunker
Frozen contract for p10-3 single PR: code-text-paragraph-v1 chunker
(blank-line paragraph split + 80-line/20-overlap line-window for oversize),
shell direct routing, Tier 1/2 fallback wrapper (0-chunk or Err → Tier 3
retry with chunker_version + parser_version swap), tier2_shared::build_chunk
pub(crate) exposure, frozen design §10.1 + §10 deltas, version bump
0.14.0 → 0.15.0.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
altair823
9d4a60aac5