diff --git a/.github/workflows/pr-iphone-deploy.yml b/.github/workflows/pr-iphone-deploy.yml
index d7b6b42..9ed691e 100644
--- a/.github/workflows/pr-iphone-deploy.yml
+++ b/.github/workflows/pr-iphone-deploy.yml
@@ -9,16 +9,21 @@ on:
     branches: [main]
     types: [opened, synchronize, reopened]
 
-permissions:
-  contents: write
-  pull-requests: write
+# Every mutation (comments, merge) goes through the Gitea API with PR_API_TOKEN,
+# never the runner's native GITHUB_TOKEN — so a `permissions:` block would be
+# a no-op here. Intentionally omitted.
+concurrency:
+  # Per-PR grouping: superseded pushes cancel the previous pipeline, different
+  # PRs still run in parallel. Prevents double-merges and wasted runner time.
+  group: pr-iphone-deploy-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
 
 jobs:
 
   build-deploy:
     name: Build & Deploy to iPhone (WiFi/USB)
     runs-on: macos
-    timeout-minutes: 20
+    timeout-minutes: 30
 
     steps:
       - name: Checkout
@@ -42,9 +47,11 @@ jobs:
           # Act runner caches
           rm -rf ~/.cache/act/*/hostexecutor/tabatago-swift/build 2>/dev/null || true
 
-          # SPM caches are KEPT between runs — RevenueCat is 1.10 GiB and takes
+          # SPM cache is KEPT between runs — RevenueCat is ~1.10 GiB and takes
           # 5+ minutes to clone; re-cloning on every CI run would waste time
-          # and cause random failures on the act_runner sandbox.
+          # and cause random failures on the act_runner sandbox. It lives at
+          # build/spm-cache (see -clonedSourcePackagesDirPath in the Build step)
+          # so NEVER `rm -rf build/` — only delete build/derived.
 
           # Xcode DerivedData — suppression COMPLÈTE (le bundle ID a changé,
           # l'ancien dossier TabataGo-* peut être ignoré par le nouveau build)
@@ -52,10 +59,12 @@ jobs:
 
           # Module cache Xcode — des .pcm stale peuvent segfault le linker
           rm -rf ~/Library/Developer/Xcode/DerivedData/ModuleCache.noindex 2>/dev/null || true
-          rm -rf ~/Library/Caches/com.apple.dt.Xcode
+          # NOTE: do NOT `rm -rf ~/Library/Caches/com.apple.dt.Xcode` — that is the
+          # shared global cache; wiping it slows every subsequent build.
 
-          # Build artifacts locaux (utilisés par le step "Build app")
-          rm -rf build/
+          # Build artifacts locaux — sparing build/spm-cache (see above).
+          rm -rf build/derived
+          rm -rf build/*.log 2>/dev/null || true
           rm -rf .build
           rm -rf tabatago-swift/.build
           rm -rf tabatago-swift/TabataGo.xcodeproj
@@ -65,11 +74,40 @@ jobs:
           find . -name "Package.resolved" -delete 2>/dev/null || true
           find . -name ".package.resolved" -delete 2>/dev/null || true
 
-          echo "✅ Caches nettoyés"
+          echo "✅ Caches nettoyés (SPM cache préservé)"
 
       - name: Install tools (xcodegen, node, ios-deploy)
         run: |
-          brew install xcodegen node ios-deploy || true
+          # No `|| true` — if brew is down, fail loudly here instead of producing
+          # confusing "command not found" errors in the next steps.
+          brew install xcodegen node ios-deploy
+
+      - name: Write Secrets.xcconfig from Gitea secrets
+        env:
+          SUPABASE_URL: ${{ secrets.SUPABASE_URL }}
+          SUPABASE_ANON_KEY: ${{ secrets.SUPABASE_ANON_KEY }}
+          REVENUECAT_API_KEY: ${{ secrets.REVENUECAT_API_KEY }}
+          POSTHOG_API_KEY: ${{ secrets.POSTHOG_API_KEY }}
+        run: |
+          # Preflight: fail loudly if a secret is missing, rather than producing
+          # an .app that silently can't reach Supabase/RevenueCat at runtime.
+          for v in SUPABASE_URL SUPABASE_ANON_KEY REVENUECAT_API_KEY; do
+            val="$(printenv "$v")"
+            if [ -z "$val" ]; then
+              echo "❌ Secret missing: $v. Add it to Gitea repo secrets."
+              exit 1
+            fi
+          done
+          # POSTHOG_API_KEY may legitimately be empty (PostHog not yet wired).
+          # NOTE: heredoc body MUST start at column 0 — xcconfig keys are
+          # whitespace-sensitive, leading spaces would break the build setting.
+          cat > tabatago-swift/Config/Secrets.xcconfig <<EOF
+          SUPABASE_URL = ${SUPABASE_URL}
+          SUPABASE_ANON_KEY = ${SUPABASE_ANON_KEY}
+          REVENUECAT_API_KEY = ${REVENUECAT_API_KEY}
+          POSTHOG_API_KEY = ${POSTHOG_API_KEY}
+          EOF
+          echo "✅ Secrets.xcconfig written (values redacted)"
 
       - name: Generate Xcode project
         run: |
@@ -157,29 +195,31 @@ jobs:
 
           echo "⏳ Attente LGTM sur PR #${PR}..."
 
-          LAST_ID=$(curl -s -H "Authorization: token ${GT_TOKEN}" \
-            "${API}/issues/${PR}/comments" | \
-            python3 -c "import json,sys; cs=json.load(sys.stdin); print(cs[-1]['id'] if cs else 0)" 2>/dev/null || echo 0)
+          # Re-fetch ALL comments each cycle (not since_id) so we also catch
+          # edits — e.g. a reviewer changing "KO" → "LGTM". Negligible cost for
+          # PRs with <50 comments.
 
           while [ $TRIES -lt $MAX ]; do
             sleep 30
             TRIES=$((TRIES + 1))
 
             COMMENTS=$(curl -s -H "Authorization: token ${GT_TOKEN}" \
-              "${API}/issues/${PR}/comments?since_id=${LAST_ID}")
+              "${API}/issues/${PR}/comments?limit=50&page=1")
 
-            if echo "$COMMENTS" | grep -qi '"body": *"LGTM"'; then
-              echo "✅ LGTM reçu ! Merge..."
+            # Match LGTM/KO anywhere in the body (with a word boundary so "KOM"
+            # or "LGTMX" don't trigger). Case-insensitive.
+            if echo "$COMMENTS" | grep -qiE '"body":[[:space:]]*"[^"]*\bLGTM\b'; then
+              echo "✅ LGTM reçu ! Squash-merge..."
               curl -s -X POST \
                 -H "Authorization: token ${GT_TOKEN}" \
                 -H "Content-Type: application/json" \
-                -d "{\"Do\":\"merge\"}" \
+                -d "{\"Do\":\"squash\"}" \
                 "${API}/pulls/${PR}/merge"
-              echo "✅ Mergée."
+              echo "✅ Mergée (squash)."
               exit 0
             fi
 
-            if echo "$COMMENTS" | grep -qi '"body": *"KO"'; then
+            if echo "$COMMENTS" | grep -qiE '"body":[[:space:]]*"[^"]*\bKO\b'; then
               echo "❌ KO reçu. Bloquée."
               exit 1
             fi