M6: Finish the Meadow guardian, badge, and starter evolution

[season179]

Closes #23

Summary

• Hand-checked fixed guardian slate (std1.meadow-guardian v1): one item each for counting, +/-, clock, money, pictograph — TP 4/3/3/3/5 (one TP5 twist). Gate ACCEPT.
• Cloudmane battle serves the slate in authored order (fixedOrder), loaded by direct path (multi-topic bank can't go through the single-topic manifest).
• Victory (or trust capture) awards the Meadow Badge exactly once and evolves the starter located by starterCreatureId to stage 2 — active or stored, no FOMO. Idempotent on re-battle.
• Portraits read stage so the evolved starter art cell shows after the badge.

Acceptance criteria

• One hand-checked item per locked topic: counting, addition/subtraction, clock, money, pictograph
• Fixed slate is deterministic, mostly TP3-4, at most one TP5 twist
• Victory awards the Meadow Badge exactly once and persists it
• starterCreatureId evolves whether active or stored, no FOMO
• Season reviews the full question slate, encounter pacing, and evolution result (HITL)

Test plan

• npm test (514 pass)
• npm run validate:questions -- .../std1.meadow-guardian.v1.json → ACCEPT
• Play: Call Cloudmane → complete Unique trust (or win path) → confirm badge notice, starter stage 2 art in party/sanctuary, re-battle does not re-award