test: add form config validator and HTTP integration test

test-config: static YAML validator for post-form.md — checks that the
add-page-by-form action name, pageconfig/pagefrontmatter blocks, and all
required fields are correctly wired. Fast, no server needed. Catches the
class of bug that caused silent post failures.

test-post: end-to-end HTTP test — logs in, submits the form, verifies an
entry.md was created on disk, then cleans up. Requires GRAV_TEST_USER and
GRAV_TEST_PASS in .env (see .env.example).

  make test-config   # fast, no credentials needed
  make test-post     # full e2e, needs .env credentials
  make test          # both

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/test-form-config.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+# Validates that post-form.md is wired correctly for the add-page-by-form plugin.
+# Fast, no server needed. Catches the class of bug that caused silent post failures.
+set -euo pipefail
+
+FORM="user/pages/02.post/post-form.md"
+PASS=0
+FAIL=0
+ERRORS=()
+
+ok()   { echo "  ✓ $1"; PASS=$((PASS+1)); }
+fail() { echo "  ✗ $1"; FAIL=$((FAIL+1)); ERRORS+=("$1"); }
+
+check_grep() {
+    local desc="$1"; local pattern="$2"
+    if grep -q "$pattern" "$FORM"; then ok "$desc"; else fail "$desc"; fi
+}
+
+echo ""
+echo "Form config validator — $FORM"
+echo "────────────────────────────────────────"
+
+# Plugin trigger: must use add_page or addpage — NOT add-page-by-form
+grep -q "add_page:\|addpage:" "$FORM" && ok "Process action is 'add_page' (plugin trigger)" \
+    || fail "Process action must be 'add_page: true' — 'add-page-by-form' is not handled by the plugin"
+
+# Config must be in frontmatter, not in the process block
+check_grep "pageconfig block exists in frontmatter"       "^pageconfig:"
+check_grep "parent set to /tracker"                       "parent: '/tracker'"
+check_grep "slug_field set (determines entry folder name)" "slug_field:"
+check_grep "pagefrontmatter block exists in frontmatter"  "^pagefrontmatter:"
+check_grep "template: entry (creates entry.md filename)"  "template: entry"
+
+# Form name must stay 'new-entry' — cache-on-save plugin checks this exact string
+check_grep "form name is 'new-entry' (required by cache-on-save plugin)" "name: new-entry"
+
+# Required form fields
+check_grep "title field present"          "name: title"
+check_grep "date field present"           "name: date"
+check_grep "content field present"        "name: content"
+check_grep "lat field present"            "name: lat"
+check_grep "lng field present"            "name: lng"
+check_grep "location_city field present"  "name: location_city"
+check_grep "location_country field present" "name: location_country"
+
+echo "────────────────────────────────────────"
+echo "  $PASS passed, $FAIL failed"
+
+if [ ${#ERRORS[@]} -gt 0 ]; then
+    echo ""
+    echo "Failed checks:"
+    for e in "${ERRORS[@]}"; do echo "  → $e"; done
+    echo ""
+    exit 1
+fi
+echo ""