feat: v1.3.0 — module-progressive Phase 1 + prototyping sub-agents

Rewrites Phase 1 (product alignment) from batched questioning to a
module-progressive flow with one-question-at-a-time + AI recommended
answers, user-paced module gates, and inline word-precision capture
into docs/glossary.md.

Adds prototype dispatch for low-fidelity decisions:
- phase1-prototyping.md (sub-flow, signal detection, type/Mode selection,
  default Viz -> Shape -> Spike escalation path)
- worker-prototype-frontend.md (single HTML + Tailwind CDN, interactive)
- worker-prototype-backend.md (three modes injected via Mode header:
  Viz = Mermaid diagrams, Shape = Pydantic/SQL/OpenAPI sketches with
  example data, Spike = runnable Python script, used sparingly)

Adds docs/glossary.md as a sub-document under PROJECT_CONTEXT_TEMPLATE:
canonical domain terms with _Avoid_ list and flagged ambiguities,
written inline during Phase 1's word-precision pass.

phase1.md highlights:
- Step A: top-level Q&A -> ad-hoc module-split proposal -> explicit
  lock handshake (no preset module template)
- Step B: three-layer progressive questioning (Big Picture -> Behavior
  -> Detail) + inline word-precision writes + scenario stress-test
  before module close-out
- Step C: module-switch gate writes locked decisions to PRD-draft.md
  before asking the user to advance
- Step D: frozen PRD.md output (human-readable, no rigid schema)
- Progress breadcrumb every turn:
  [Module N/M: name] - Current layer: X - Locked: K - Pending: J
- Cross-session state recovery via PRD-draft.md progress metadata
- Term re-review must be surfaced, not silent
- User-driven B.3 opt-out must be surfaced as a locked decision, not
  silently skipped

Also includes a Product Hunt badge addition to README.md / README.zh.md.

Validated via 4 simulated-dialogue scenarios (cold-start AI agent,
prototype trigger, existing PRD doc, backend Viz->Shape escalation)
plus 1 real-filesystem run. All scenarios pass after iterative fixes.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>