chore(dump): refresh static API for the 28 merged PDA records

Re-dumped the pdas collection from the deduped data tree (fresh scratch DB, TECHAPI_DATA_DIR on this worktree). pdas 140 -> 112: 28 merged-away detail pages removed, 21 survivor pages updated (repaired ram_gb, brand-inclusive names, unioned source_urls), and the top-level manifest pda count updated. No other collection touched.

Author: Seungpyo1007

site/public/v1/index.json

@@ -24,7 +24,7 @@
       "url": "/v1/watches/index.json"
     },
     "pdas": {
-      "count": 140,
+      "count": 112,
       "url": "/v1/pdas/index.json"
     },
     "gpus": {