Remove unused nuzlocke rules, reorganize into core and playstyle

Remove firstEncounterOnly, permadeath, nicknameRequired, and
postGameCompletion from the rules system — they are either implicit
(it's a nuzlocke tracker) or not enforced. Move levelCaps to core
(it's displayed in the sticky bar). Create a new "playstyle" category
for hardcoreMode and setModeOnly — informational rules useful for
stats but not enforced by the tracker. Remove the completion category
entirely. Add sub-task beans for the rules overhaul epic.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.beans/nuzlocke-tracker-knnc--add-staticlegendary-clause-rule.md

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+---
+# nuzlocke-tracker-knnc
+title: Add static/legendary clause rule
+status: todo
+type: feature
+priority: normal
+created_at: 2026-02-20T19:56:27Z
+updated_at: 2026-02-20T20:02:07Z
+parent: nuzlocke-tracker-49xj
+---
+
+Control whether static/legendary encounters count against the area's encounter limit.
+
+## Design Decisions
+
+**Scope:** This rule covers overworld Pokemon that are always available (legendaries, Snorlax blocking the road, Sudowoodo, Voltorb in the power plant, etc.). These are distinct from gifts (given by NPCs) which are covered by giftClause (sij8).
+
+**Encounter method:** The existing encounter method list (walk, surf, gift, fossil, etc.) doesn't have a "static" method. Add `static` as a new encounter method in the seed data and `METHOD_CONFIG`. Static encounters are one-time overworld Pokemon the player walks up to and battles.
+
+**Rule behavior:** `staticClause: boolean` (default: false). When enabled, encounters with method `static` bypass the route-lock check (same pattern as shinyClause and giftClause). This means static Pokemon are "free" and don't consume the area's encounter.
+
+**No legendary ban:** Rather than banning legendaries outright, the community standard is to let the player choose. The tracker just needs to support logging static encounters correctly. Players who want to ban legendaries simply don't catch them.
+
+**Interaction with giftClause:** These are separate rules. `giftClause` covers NPC gifts (method: `gift`). `staticClause` covers overworld statics (method: `static`). A player can enable both, one, or neither.
+
+## Checklist
+
+- [ ] Add `static` encounter method to seed data and `METHOD_CONFIG` / `METHOD_ORDER`
+- [ ] Add `staticClause` to `NuzlockeRules` interface and `DEFAULT_RULES` (default: false)
+- [ ] Add `RuleDefinition` entry under `'core'` category
+- [ ] When enabled, encounters with method `static` bypass route-lock check in backend (add to `skip_route_lock` condition alongside shiny/egg/shed/transfer)
+- [ ] Update encounter creation frontend to show `static` as a selectable method where appropriate