Airmed's herbs: a find-and-deliver Max HP quest

[FiddlyDigital]

Reworks Airmed the Herb-Wise from a gold shop into a foraging quest that fits the roguelike loop.

The quest

• Rare spawns — once Airmed is freed, a herb of Miach's grave becomes a vanishingly rare rider on falling stone (~1/365 per piece — one for each herb of the myth). Gated on the rescue so it can't appear before she can use it, and never during the tutorial.
• Gather by walking — the herb locks as a green floor tile with a soft pulse (sprite_salve); step onto it to gather it. Gathered herbs travel with you between floors; an ungathered herb can be crushed by a line clear (protect the row).
• Deliver for HP — bring your gathered herbs to Airmed in the sídhe mound and she works each into a permanent +20% Max HP (compounding), then empties the satchel.

Removes the old gold-shop path entirely (healerBaseCost / healerCostPerFloor / healerHpGain → herbSpawnChance + herbHpPct in balance.json's rescues block).

Changes

• types.ts: Cell.HERB
• balance.json + schema + balance.ts: herbSpawnChance (1/365), herbHpPct (0.2)
• game.ts: herbTiles/herbsCarried state; spawn injection; lockBlock tile placement; walk-on gather; line-clear loss; per-floor reset (carried herbs persist)
• renderer.ts: draw herb tiles (green glow) + falling-piece preview
• vendorOffers.ts: healer branch → herb delivery (no gold)
• rescues.json: Airmed's service flavor is no longer a shop
• Tests: spawn gating, lock + gather, delivery (+20%/herb, satchel emptied), floor persistence
• README: new "Airmed's herbs" system row

Save/resume carries herbTiles/herbsCarried automatically via the generic scalar sweep.

Verification

npm run verify green: 432/432 tests, coverage ~84.6% stmts / 76.2% branches / 84.4% funcs / 87.7% lines (above thresholds), lint clean, validate-data + build + smoke pass. Verified live in-browser: herbs render on the floor and gather on walk-on, no page errors.

🤖 Generated with Claude Code

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Generated by Claude Code