docs(plan): v1.0 cycle — fases 17–20 (versioning + list flow + emojis + euskera)

Four planned-fase docs for the first tagged release.

- Fase 17 — semver git tags + CHANGELOG.md (Keep-a-Changelog, [new]/
  [fix]/[tweak] prefixes), one big v0.0.0-beta backfill block covering
  Fases 0–16, About-modal in /settings rendering bundled CHANGELOG via
  ?raw import, deploy-script tag check + tag column in .deploys.log.
- Fase 18 — shopping list flow: required title (client + DB tighten),
  per-collective per-prefix #N auto-numbering parsed from typed title,
  collectives.default_list_title, collective_list_titles catalog + admin
  RPCs, autocomplete union (catalog + last-10). Migration 027.
- Fase 19 — EMOJI_CATALOG with faces/food/animals/objects categories
  (~280 codepoints, Unicode 14 baseline for iOS<17 compat), new
  EmojiPicker.svelte replacing the 8-emoji hardcoded selector at 4
  sites. No migration.
- Fase 20 — Euskera locale: messages/eu.json via machine-translate
  seed flagged with [needs review], users.language check constraint
  extended to ('en','es','eu'), accept-language parser + selector in
  /settings. Migration 028. v1.0.0 tag lands at the end of this fase.

README + CLAUDE.md updated with the v1.0 cycle pointers.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

README.md

@@ -28,6 +28,11 @@
 | ↳ Fase 14 — PWA hardening | ✅ |
 | ↳ Fase 15 — Common items management | ✅ |
 | ↳ Fase 16 — Loading spinner | ✅ |
+| **v1.0** — Fase 17 → 20 | 📋 Planificada |
+| ↳ Fase 17 — Versioning + CHANGELOG | 📋 |
+| ↳ Fase 18 — Shopping list flow | 📋 |
+| ↳ Fase 19 — Emoji avatars | 📋 |
+| ↳ Fase 20 — Euskera locale | 📋 (cierra `v1.0.0`) |
 | Suite de tests (pgTAP + Vitest + Playwright) | ✅ **505 tests verdes** (177 pgTAP + 179 integración + 52 unit + 96 E2E) + 1 rate-limit gated (`just test-rate-limit`). 3 skipped en `just test-all` (2 Realtime presence — upstream `handle_out/3` bug; 1 rate-limit — gated). |
 
 ---
@@ -63,6 +68,10 @@ Las fases ya cerradas (0, 1, 2a) reflejan este patrón retroactivamente: la secc
 | **MVP2 — Fase 14** | [fase-14-pwa-hardening.md](plan/fase-14-pwa-hardening.md) | 3–5 días |
 | **MVP2 — Fase 15** | [fase-15-common-items.md](plan/fase-15-common-items.md) | 3–5 días |
 | **MVP2 — Fase 16** | [fase-16-spinner.md](plan/fase-16-spinner.md) | 1 día |
+| **v1.0 — Fase 17** | [fase-17-versioning-changelog.md](plan/fase-17-versioning-changelog.md) | 2–3 días |
+| **v1.0 — Fase 18** | [fase-18-shopping-list-flow.md](plan/fase-18-shopping-list-flow.md) | 3–5 días |
+| **v1.0 — Fase 19** | [fase-19-emoji-avatars.md](plan/fase-19-emoji-avatars.md) | 1–2 días |
+| **v1.0 — Fase 20** | [fase-20-euskera-locale.md](plan/fase-20-euskera-locale.md) | 1–2 días (+ review humana) |
 
 **Total estimado MVP (Fase 0–6): 11–16 semanas. MVP2 (Fase 9–14, rama `mvp2`): 10–14 semanas. Fase 7+8 entre MVP y MVP2 como cleanup post-launch.**