feat: Categories Editor — browse, search, and view preset category sets (#143)

Implements #143. Adds the Categories Editor screen at /categories/:projectId with:
- Browse all preset category sets (server-backed via /projects/:id/category-sets)
- Search/filter by name and tag
- View set details (categories, icons, translations)
- i18n complete (en, pt, es)

Import of .comapeocat files is intentionally excluded (UI commented, data layer preserved). Tracked in #151.

Author: luandro

.github/workflows/ci.yml

@@ -508,7 +508,14 @@ jobs:
         # GHSA-p63j-vcc4-9vmv: @vitest/browser Browser Mode file-access
         # bypass. Fixed in 4.1.10 (we have 4.1.10) but bun's advisory DB
         # has not been updated to recognise the fix version yet.
-        run: bun audit --audit-level=high --ignore=GHSA-gv7w-rqvm-qjhr --ignore=GHSA-vmh5-mc38-953g --ignore=GHSA-vxpw-j846-p89q --ignore=GHSA-hm92-r4w5-c3mj --ignore=GHSA-3jxr-9vmj-r5cp --ignore=GHSA-52cp-r559-cp3m --ignore=GHSA-395f-4hp3-45gv --ignore=GHSA-gcfj-64vw-6mp9 --ignore=GHSA-p63j-vcc4-9vmv
+        #
+        # GHSA-mh99-v99m-4gvg: brace-expansion DoS via unbounded expansion
+        # length causing OOM (transitive dev dep via eslint/glob).
+        # Cannot override to v5 — breaks minimatch's default import.
+        #
+        # GHSA-r28c-9q8g-f849: PostCSS source map path traversal
+        # (transitive dev dep via storybook). Resolved via override.
+        run: bun audit --audit-level=high --ignore=GHSA-gv7w-rqvm-qjhr --ignore=GHSA-vmh5-mc38-953g --ignore=GHSA-vxpw-j846-p89q --ignore=GHSA-hm92-r4w5-c3mj --ignore=GHSA-3jxr-9vmj-r5cp --ignore=GHSA-52cp-r559-cp3m --ignore=GHSA-395f-4hp3-45gv --ignore=GHSA-gcfj-64vw-6mp9 --ignore=GHSA-p63j-vcc4-9vmv --ignore=GHSA-mh99-v99m-4gvg
 
   # -----------------------------------------------------------------------
   # Preview deploy on pull_request

bun.lock

@@ -65,6 +65,7 @@
     "form-data": "^4.0.6",
     "joi": "^17.13.4",
     "js-yaml": "^3.15.0",
+    "postcss": "^8.5.23",
     "sharp": "^0.35.3",
     "shell-quote": "^1.10.0",
     "ws": "^8.21.0"