test: register wave-3 carves (qa, browse, retro) — guards, touchfiles, pins, baselines

CARVE_GUARDS gains the three entries; qa's monolith invariant retires.
auq-format carve-safety now keys on the skeleton+sections union shipping
the AUQ block (first tier-1 carve: browse never renders it by design).
Baselines: parity v1.69.1.0 at 18 sectioned skills; ratchet recaptured.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

test/fixtures/context-budget.json

@@ -5,7 +5,7 @@
     "autoplan": 15337,
     "benchmark": 4856,
     "benchmark-models": 3829,
-    "browse": 10212,
+    "browse": 7022,
     "browser-skills/hackernews-frontpage": 371,
     "canary": 9921,
     "careful": 919,
@@ -48,9 +48,9 @@
     "plan-devex-review": 16141,
     "plan-eng-review": 13081,
     "plan-tune": 14088,
-    "qa": 17873,
+    "qa": 12582,
     "qa-only": 12355,
-    "retro": 19313,
+    "retro": 17894,
     "review": 14374,
     "scrape": 3939,
     "setup-browser-cookies": 3119,

test/fixtures/parity-baseline-v1.69.1.0.json

@@ -1,10 +1,10 @@
 {
   "tag": "v1.69.1.0",
-  "capturedAt": "2026-08-25T16:58:29.504Z",
-  "capturedFromCommit": "2877b63a",
+  "capturedAt": "2026-08-25T17:36:29.077Z",
+  "capturedFromCommit": "706091cb",
   "capturedFromBranch": "prompt-token-load-reduction",
   "totalSkills": 53,
-  "totalCorpusBytes": 2807143,
+  "totalCorpusBytes": 2810742,
   "estTotalCatalogTokens": 4195,
   "topHeaviest": [
     {
@@ -141,10 +141,10 @@
     },
     "browse": {
       "skill": "browse",
-      "skillMdBytes": 39081,
-      "skillMdLines": 678,
-      "estTokens": 9770,
-      "tmplBytes": 15864,
+      "skillMdBytes": 41115,
+      "skillMdLines": 537,
+      "estTokens": 10279,
+      "tmplBytes": 16895,
       "descriptionLen": 181,
       "hasGateEval": true,
       "hasPeriodicEval": false
@@ -511,10 +511,10 @@
     },
     "qa": {
       "skill": "qa",
-      "skillMdBytes": 68403,
-      "skillMdLines": 1326,
-      "estTokens": 17101,
-      "tmplBytes": 12701,
+      "skillMdBytes": 70385,
+      "skillMdLines": 883,
+      "estTokens": 17596,
+      "tmplBytes": 12792,
       "descriptionLen": 218,
       "hasGateEval": true,
       "hasPeriodicEval": false
@@ -531,10 +531,10 @@
     },
     "retro": {
       "skill": "retro",
-      "skillMdBytes": 73913,
-      "skillMdLines": 1426,
-      "estTokens": 18478,
-      "tmplBytes": 42589,
+      "skillMdBytes": 73496,
+      "skillMdLines": 1214,
+      "estTokens": 18374,
+      "tmplBytes": 36523,
       "descriptionLen": 838,
       "hasGateEval": true,
       "hasPeriodicEval": false