fix: rename mage_1/cleric_1 upgrades to match adventurer IDs

The Apprentice Mage upgrade was named mage_1 and the Acolyte upgrade
was named cleric_1 — both referencing the adventurer class rather
than the adventurer ID. All other adventurer upgrades use the
adventurer ID as the prefix. Updated upgrades.ts, quests.ts (reward
targetIds), and codex.ts (sourceIds) consistently.

Closes #105

apps/web/src/data/codex.ts

@@ -2752,8 +2752,8 @@ export const CODEX_ENTRIES: Array<CodexEntry> = [
   {
     content:
       "The ancient books of magic acquired for the guild's mages contained techniques that their trainers had either not known or had chosen not to teach. The omission, in most cases, appeared to be deliberate — the techniques worked but produced results that the academies found uncomfortable to endorse. Your guild finds them extremely comfortable to have, and the mage output doubled from the application of knowledge that had been sitting in books waiting for someone to act on it.",
-    id:         "upgrade_mage_1",
-    sourceId:   "mage_1",
+    id:         "upgrade_apprentice_1",
+    sourceId:   "apprentice_1",
     sourceType: "upgrade",
     title:      "Arcane Tomes: The Written Knowledge",
     zoneId:     "guild_library",
@@ -2761,8 +2761,8 @@ export const CODEX_ENTRIES: Array<CodexEntry> = [
   {
     content:
       "The sacred ceremonies that your clerics now perform before and during operations were developed by your head cleric over six months of experimentation that their deity appears to have sanctioned, based on the results. The rites formalise the relationship between divine power and operational output into a repeatable process. Doubled cleric output is the result of making the exceptional ordinary through the discipline of ceremony.",
-    id:         "upgrade_cleric_1",
-    sourceId:   "cleric_1",
+    id:         "upgrade_acolyte_1",
+    sourceId:   "acolyte_1",
     sourceType: "upgrade",
     title:      "Holy Rites: The Sacred Routine",
     zoneId:     "guild_library",