fix: bugs #238,#240,#244,#246 + docs #248 update

- #238: Fix spire tab inconsistent state (Max Floor 1 but Floors Cleared 0) by not inflating maxFloorReached on enterSpireMode and preserving it on exitSpireMode
- #240: Fix guardian armor display stray text by extracting stat formatters in SpireSummaryTab
- #244: Improve discipline auto-pause UX with log messages and visual feedback on DisciplineCard
- #246: Fix raw mana exceeding max cap by recomputing maxMana after discipline XP gains
- #248: Update AGENTS.md (remove gitea_get_project_boards, add gitea_start_session, 22 mana types, 8 stores, updated guardian tiers)
- #248: Update README.md (remove Prisma/SQLite refs, update mana types/guardian tiers/discipline counts)
- #248: Update GAME_BRIEFING.md (8 stores, 22 mana types, 64 disciplines, 8-tier guardians, correct code architecture)

src/lib/game/stores/gameStore.ts

@@ -218,6 +218,21 @@ export const useGameStore = create<GameCoordinatorStore>()(
           rawMana = disciplineResult.rawMana;
           elements = disciplineResult.elements;
 
+          // Log auto-paused disciplines for better UX feedback (fix #244)
+          if (disciplineResult.autoPausedNames.length > 0) {
+            const names = disciplineResult.autoPausedNames.join(', ');
+            addLog('⏸️ Auto-paused (insufficient mana): ' + names);
+          }
+
+          // Recompute maxMana after discipline XP gains so clamping uses updated value (fix #246)
+          const updatedDisciplineEffects = computeDisciplineEffects();
+          const updatedMaxMana = computeMaxMana(
+            { prestigeUpgrades: ctx.prestige.prestigeUpgrades },
+            undefined,
+            updatedDisciplineEffects,
+          );
+          rawMana = Math.min(rawMana, updatedMaxMana);
+
           for (const [targetElem, conv] of Object.entries(disciplineEffects.conversions)) {
             const conversionAmount = conv.rate * HOURS_PER_TICK;
             let canConvert = true;