fix(ci): fetch TechAPI history where the dump reads record timestamps

With the default depth-1 checkout, git log sees one commit, so every
record reported the tip commit time — the dump-refresh PR after #65 showed
all pages sharing a single timestamp.

Refs #1

Author: Seungpyo1007

.github/workflows/deploy-pages.yml

@@ -28,6 +28,8 @@ jobs:
         with:
           repository: GetTechAPI/TechAPI
           path: TechAPI
+          # Record timestamps are read from git history (app/seed.py).
+          fetch-depth: 0
 
       - uses: actions/setup-python@v6
         with:

.github/workflows/dump-refresh.yml

@@ -42,6 +42,9 @@ jobs:
           repository: GetTechAPI/TechAPI
           path: techapi
           token: ${{ secrets.TECHENGINEBOT_TOKEN || secrets.TECHAPI_TOKEN || secrets.GITHUB_TOKEN }}
+          # created_at/updated_at come from each record's git history; with the
+          # default depth-1 checkout every record would report the tip commit.
+          fetch-depth: 0
 
       - uses: actions/setup-python@v6
         with: