feat(pdok): route PDOK lookups through openconnector (closes #404)

[rubenvdlinde]

Implements migrate-pdok-to-openconnector — the procest subset of shared-pdok-via-openconnector.

What

• src/services/pdokService.js rewritten as a thin shim: all PDOK access now flows through /index.php/apps/openconnector/api/pdok/* instead of direct browser calls to api.pdok.nl.
• All six exported function signatures preserved — src/store/modules/gis.js and src/components/map/AddressSearch.vue unchanged.
• Degraded handling: 503 → null + message_key for display; 404 (openconnector absent) → empty result + non-blocking warning; form submission unaffected.

Dependencies

Depends on openconnector#752 (PDOK adapter PR). Functional E2E testing (PR-3) and fixture bootstrap (PR-4) deferred until openconnector is installed.

Test plan

• Quality gate (ESLint/stylelint) green
• Manual smoke once openconnector PDOK adapter is installed
• Existing procest tests pass (no test file references api.pdok.nl)

Closes #404.

[github-actions]

Quality Report — ConductionNL/procest @ c698840

Check	PHP	Vue	Security	License	Tests
lint	✅
phpcs	❌
phpmd	✅
psalm	✅
phpstan	✅
phpmetrics	✅
eslint		❌
stylelint		❌
composer			✅	✅ 100/100
npm			✅	✅ 419/419
PHPUnit					⏭️
Newman					⏭️
Playwright					❌

Spec coverage: 5% (21 tests / 456 specs)

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Quality workflow — 2026-05-11 21:45 UTC

Download the full PDF report from the workflow artifacts.

[WilcoLouwerse]

🔴 Blockers

• 🔴 suggest() returns null on 503 — breaks AddressSearch template
• 🔴 PR-2.1 marked done but no JS unit test suite exists

🟡 Concerns

• 🟡 Response envelope shape change is an unverified cross-repo contract
• 🟡 lastWarning is exported but no caller reads it — 404 inline warning is dead code
• 🟡 design.md documents free() with a start parameter that the implementation dropped

🟢 Minor

• 🟢 design.md BASE_URL pseudocode uses hardcoded /index.php/ prefix

[rubenvdlinde]

Auto-closed in error by a force-push bug in the quality-cleanup harness. Reopened as #497 with the same branch and content.