.github/workflows/ci.yml

@@ -6,11 +6,6 @@ on:
   pull_request:
     branches: [main, dev]
   workflow_dispatch:
-    inputs:
-      ref:
-        description: "Branch or ref to run CI against"
-        required: false
-        default: "main"
 
 jobs:
   lint-typecheck:
@@ -86,14 +81,8 @@ jobs:
 
       - name: Run E2E tests
         run: pnpm --filter @groombook/e2e test
-
-      - name: Upload Playwright report
-        if: failure()
-        uses: actions/upload-artifact@v4
-        with:
-          name: playwright-report
-          path: apps/e2e/playwright-report/
-          retention-days: 7
+        env:
+          PLAYWRIGHT_BASE_URL: http://host.docker.internal:8080
 
       - name: Stop Docker Compose stack
         if: always()
@@ -129,9 +118,6 @@ jobs:
     needs: [build, e2e]
     outputs:
       tag: ${{ steps.version.outputs.tag }}
-    permissions:
-      contents: read
-      packages: write
     steps:
       - uses: actions/checkout@v4
 
@@ -152,12 +138,12 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Log in to GitHub Container Registry
+      - name: Log in to Gitea Container Registry
         uses: docker/login-action@v3
         with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+          registry: git.farh.net
+          username: ${{ gitea.actor }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
 
       - name: Build and push API image
         uses: docker/build-push-action@v6
@@ -167,10 +153,10 @@ jobs:
           target: runner
           push: true
           tags: |
-            ghcr.io/groombook/api:${{ steps.version.outputs.tag }}
-            ${{ github.ref == 'refs/heads/main' && 'ghcr.io/groombook/api:latest' || '' }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+            git.farh.net/groombook/api:${{ steps.version.outputs.tag }}
+            ${{ github.ref == 'refs/heads/main' && 'git.farh.net/groombook/api:latest' || '' }}
+          cache-from: type=registry,ref=git.farh.net/groombook/cache:api
+          cache-to: type=registry,ref=git.farh.net/groombook/cache:api,mode=max
 
       - name: Build and push Migrate image
         uses: docker/build-push-action@v6
@@ -180,10 +166,10 @@ jobs:
           target: migrate
           push: true
           tags: |
-            ghcr.io/groombook/migrate:${{ steps.version.outputs.tag }}
-            ${{ github.ref == 'refs/heads/main' && 'ghcr.io/groombook/migrate:latest' || '' }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+            git.farh.net/groombook/migrate:${{ steps.version.outputs.tag }}
+            ${{ github.ref == 'refs/heads/main' && 'git.farh.net/groombook/migrate:latest' || '' }}
+          cache-from: type=registry,ref=git.farh.net/groombook/cache:migrate
+          cache-to: type=registry,ref=git.farh.net/groombook/cache:migrate,mode=max
 
       - name: Build and push Seed image
         uses: docker/build-push-action@v6
@@ -193,10 +179,10 @@ jobs:
           target: seed
           push: true
           tags: |
-            ghcr.io/groombook/seed:${{ steps.version.outputs.tag }}
-            ${{ github.ref == 'refs/heads/main' && 'ghcr.io/groombook/seed:latest' || '' }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+            git.farh.net/groombook/seed:${{ steps.version.outputs.tag }}
+            ${{ github.ref == 'refs/heads/main' && 'git.farh.net/groombook/seed:latest' || '' }}
+          cache-from: type=registry,ref=git.farh.net/groombook/cache:seed
+          cache-to: type=registry,ref=git.farh.net/groombook/cache:seed,mode=max
 
       - name: Build and push Reset image
         uses: docker/build-push-action@v6
@@ -206,10 +192,10 @@ jobs:
           target: reset
           push: true
           tags: |
-            ghcr.io/groombook/reset:${{ steps.version.outputs.tag }}
-            ${{ github.ref == 'refs/heads/main' && 'ghcr.io/groombook/reset:latest' || '' }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+            git.farh.net/groombook/reset:${{ steps.version.outputs.tag }}
+            ${{ github.ref == 'refs/heads/main' && 'git.farh.net/groombook/reset:latest' || '' }}
+          cache-from: type=registry,ref=git.farh.net/groombook/cache:reset
+          cache-to: type=registry,ref=git.farh.net/groombook/cache:reset,mode=max
 
       - name: Build and push Web image
         uses: docker/build-push-action@v6
@@ -218,19 +204,16 @@ jobs:
           file: apps/web/Dockerfile
           push: true
           tags: |
-            ghcr.io/groombook/web:${{ steps.version.outputs.tag }}
-            ${{ github.ref == 'refs/heads/main' && 'ghcr.io/groombook/web:latest' || '' }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+            git.farh.net/groombook/web:${{ steps.version.outputs.tag }}
+            ${{ github.ref == 'refs/heads/main' && 'git.farh.net/groombook/web:latest' || '' }}
+          cache-from: type=registry,ref=git.farh.net/groombook/cache:web
+          cache-to: type=registry,ref=git.farh.net/groombook/cache:web,mode=max
 
   deploy-dev:
     name: Deploy PR to groombook-dev
     runs-on: runners-groombook
     needs: [docker]
     if: github.event_name == 'pull_request'
-    permissions:
-      contents: read
-      pull-requests: write
     steps:
       - name: Install kubectl
         run: |
@@ -247,7 +230,6 @@ jobs:
           TAG="pr-$PR_NUM-${SHA::7}"
           echo "Deploying images tagged $TAG to groombook-dev..."
 
-          # Run migration with PR image
           kubectl delete job "migrate-pr-$PR_NUM" -n groombook-dev --ignore-not-found
           cat <<EOF | kubectl apply -n groombook-dev -f -
           apiVersion: batch/v1
@@ -262,7 +244,7 @@ jobs:
                 restartPolicy: Never
                 containers:
                 - name: migrate
-                  image: ghcr.io/groombook/migrate:$TAG
+                  image: git.farh.net/groombook/migrate:$TAG
                   env:
                   - name: DATABASE_URL
                     valueFrom:
@@ -273,35 +255,33 @@ jobs:
           kubectl wait --for=condition=complete "job/migrate-pr-$PR_NUM" \
             -n groombook-dev --timeout=120s
 
-          # Update deployments
-          kubectl set image deployment/api api=ghcr.io/groombook/api:$TAG -n groombook-dev
-          kubectl set image deployment/web web=ghcr.io/groombook/web:$TAG -n groombook-dev
+          kubectl set image deployment/api api=git.farh.net/groombook/api:$TAG -n groombook-dev
+          kubectl set image deployment/web web=git.farh.net/groombook/web:$TAG -n groombook-dev
 
-          # Wait for rollout
           kubectl rollout status deployment/api -n groombook-dev --timeout=300s
           kubectl rollout status deployment/web -n groombook-dev --timeout=300s
 
           echo "Deployment complete."
 
       - name: Comment on PR
-        uses: actions/github-script@v7
-        with:
-          script: |
-            const pr = context.issue.number;
-            const tag = `pr-${pr}`;
-            await github.rest.issues.createComment({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              issue_number: pr,
-              body: [
-                '## Deployed to groombook-dev',
-                '',
-                `**Images:** \`${tag}\``,
-                '**URL:** https://dev.groombook.farh.net',
-                '',
-                'Ready for UAT validation.'
-              ].join('\n')
-            });
+        env:
+          PR_NUM: ${{ github.event.pull_request.number }}
+        run: |
+          PR_NUM="$PR_NUM"
+          BODY=$(cat <<'EOFBODY'
+          ## Deployed to groombook-dev
+
+          **Images:** `pr-'"$PR_NUM"'`
+
+          **URL:** https://dev.groombook.farh.net
+
+          Ready for UAT validation.
+          EOFBODY
+          )
+          curl -s -X POST "https://git.farh.net/api/v1/repos/groombook/app/issues/${PR_NUM}/comments" \
+            -H "Authorization: Bearer ${{ secrets.REGISTRY_TOKEN }}" \
+            -H "Content-Type: application/json" \
+            -d "{\"body\": $(echo "$BODY" | jq -Rs .)}"
 
   web-e2e:
     name: Web E2E (Dev)
@@ -330,33 +310,15 @@ jobs:
         run: pnpm --filter @groombook/web test:e2e
         timeout-minutes: 10
 
-      - name: Upload Playwright report
-        if: failure()
-        uses: actions/upload-artifact@v4
-        with:
-          name: playwright-web-e2e-report
-          path: apps/web/playwright-report/
-          retention-days: 7
-
   cd:
     name: Update Infra Image Tags
     runs-on: ubuntu-latest
     needs: [docker]
     if: (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev') && github.event_name == 'push'
-    permissions:
-      contents: write
-      pull-requests: write
     steps:
-      - name: Generate infra repo token
-        id: infra-token
-        uses: tibdex/github-app-token@v2
-        with:
-          app_id: ${{ vars.GH_APP_ID }}
-          private_key: ${{ secrets.GH_APP_PRIVATE_KEY }}
-
       - name: Clone groombook/infra
         run: |
-          git clone https://x-access-token:${{ steps.infra-token.outputs.token }}@github.com/groombook/infra.git /tmp/infra
+          git clone https://oauth2:${{ secrets.REGISTRY_TOKEN }}@git.farh.net/groombook/infra.git /tmp/infra
 
       - name: Install yq
         run: |
@@ -376,27 +338,23 @@ jobs:
           echo "Updating migration/seed Job names with SHA: $SHORT_SHA"
           cd /tmp/infra
           DEV_KUST="apps/overlays/dev/kustomization.yaml"
-          yq -i '(.images[] | select(.name == "ghcr.io/groombook/api")).newTag = env(TAG)' "$DEV_KUST"
-          yq -i '(.images[] | select(.name == "ghcr.io/groombook/web")).newTag = env(TAG)' "$DEV_KUST"
-          yq -i '(.images[] | select(.name == "ghcr.io/groombook/migrate")).newTag = env(TAG)' "$DEV_KUST"
-          yq -i '(.images[] | select(.name == "ghcr.io/groombook/seed")).newTag = env(TAG)' "$DEV_KUST"
-          yq -i '(.images[] | select(.name == "ghcr.io/groombook/reset")).newTag = env(TAG)' "$DEV_KUST"
+          yq -i '(.images[] | select(.name == "git.farh.net/groombook/api")).newTag = env(TAG)' "$DEV_KUST"
+          yq -i '(.images[] | select(.name == "git.farh.net/groombook/web")).newTag = env(TAG)' "$DEV_KUST"
+          yq -i '(.images[] | select(.name == "git.farh.net/groombook/migrate")).newTag = env(TAG)' "$DEV_KUST"
+          yq -i '(.images[] | select(.name == "git.farh.net/groombook/seed")).newTag = env(TAG)' "$DEV_KUST"
+          yq -i '(.images[] | select(.name == "git.farh.net/groombook/reset")).newTag = env(TAG)' "$DEV_KUST"
 
-          # Update migrate Job name to include short SHA (immutable template fix)
           MIGRATE_JOB="apps/base/migrate-job.yaml"
           if [ -f "$MIGRATE_JOB" ]; then
             yq -i '.metadata.name = "migrate-schema-" + env(SHORT_SHA)' "$MIGRATE_JOB"
             yq -i '.metadata.annotations."groombook.app/deploy-version" = env(TAG)' "$MIGRATE_JOB"
-            # Ensure ttlSecondsAfterFinished is set for automatic cleanup
             yq -i '.spec.ttlSecondsAfterFinished = (.spec.ttlSecondsAfterFinished // 86400)' "$MIGRATE_JOB"
           fi
 
-          # Update seed Job name to include short SHA (immutable template fix)
           SEED_JOB="apps/base/seed-job.yaml"
           if [ -f "$SEED_JOB" ]; then
             yq -i '.metadata.name = "seed-test-data-" + env(SHORT_SHA)' "$SEED_JOB"
             yq -i '.metadata.annotations."groombook.app/deploy-version" = env(TAG)' "$SEED_JOB"
-            # Ensure ttlSecondsAfterFinished is set for automatic cleanup
             yq -i '.spec.ttlSecondsAfterFinished = (.spec.ttlSecondsAfterFinished // 86400)' "$SEED_JOB"
           fi
 
@@ -405,7 +363,6 @@ jobs:
       - name: Create PR on groombook/infra
         env:
           TAG: ${{ needs.docker.outputs.tag }}
-          GH_TOKEN: ${{ steps.infra-token.outputs.token }}
         run: |
           if [ -z "$TAG" ]; then
             TAG="$(date -u +%Y.%m.%d)-${GITHUB_SHA::7}"
@@ -413,24 +370,35 @@ jobs:
 
           cd /tmp/infra
           git config user.name "groombook-engineer[bot]"
-          git config user.email "3141748+groombook-engineer[bot]@users.noreply.github.com"
+          git config user.email "groombook-engineer@farh.net"
           git checkout -b "chore/update-image-tags-${TAG}"
           git add apps/overlays/dev/ apps/base/migrate-job.yaml apps/base/seed-job.yaml
           git commit -m "chore: update image tags and migration/seed Job names to ${TAG}"
 
           git push -u origin "chore/update-image-tags-${TAG}"
 
-          # Check if PR already exists for this branch
-          EXISTING_PR=$(gh pr list --repo groombook/infra --head "chore/update-image-tags-${TAG}" --state open --json number -q '.[0].number' || true)
-          if [ -n "$EXISTING_PR" ]; then
+          EXISTING_PR=$(curl -s "https://git.farh.net/api/v1/repos/groombook/infra/pulls?state=open&head=groombook:chore/update-image-tags-${TAG}" \
+            -H "Authorization: Bearer ${{ secrets.REGISTRY_TOKEN }}" | jq -r '.[0].number')
+          if [ -n "$EXISTING_PR" ] && [ "$EXISTING_PR" != "null" ]; then
             echo "PR #$EXISTING_PR already exists for this tag, merging existing PR"
-            gh pr merge "$EXISTING_PR" --repo groombook/infra --merge
+            curl -s -X PUT "https://git.farh.net/api/v1/repos/groombook/infra/pulls/${EXISTING_PR}/merge" \
+              -H "Authorization: Bearer ${{ secrets.REGISTRY_TOKEN }}" \
+              -H "Content-Type: application/json" \
+              -d '{"do": "merge"}'
           else
-            PR_URL=$(gh pr create \
-              --repo groombook/infra \
-              --base main \
-              --head "chore/update-image-tags-${TAG}" \
-              --title "chore: deploy ${TAG} to dev" \
-              --body "[GRO-178](/GRO/issues/GRO-178) — automated image tag update from main merge")
-            gh pr merge "$PR_URL" --merge
+            PR_RESPONSE=$(curl -s -X POST "https://git.farh.net/api/v1/repos/groombook/infra/pulls" \
+              -H "Authorization: Bearer ${{ secrets.REGISTRY_TOKEN }}" \
+              -H "Content-Type: application/json" \
+              -d "{
+                \"base\": \"main\",
+                \"head\": \"chore/update-image-tags-${TAG}\",
+                \"title\": \"chore: deploy ${TAG} to dev\",
+                \"body\": \"[GRO-178](/GRO/issues/GRO-178) — automated image tag update from main merge\"
+              }")
+            PR_NUM=$(echo "$PR_RESPONSE" | jq -r '.number')
+            echo "Created PR #$PR_NUM"
+            curl -s -X PUT "https://git.farh.net/api/v1/repos/groombook/infra/pulls/${PR_NUM}/merge" \
+              -H "Authorization: Bearer ${{ secrets.REGISTRY_TOKEN }}" \
+              -H "Content-Type: application/json" \
+              -d '{"do": "merge"}'
           fi

UAT_PLAYBOOK.md

@@ -78,6 +78,13 @@ GroomBook is an open-source, self-hostable pet grooming business management & CR
 | TC-APP-4.5.4 | Calendar view (day/week/month) | 1. Navigate to Calendar<br>2. Switch between day, week, and month views | Calendar displays appointments in selected time range correctly |
 | TC-APP-4.5.5 | Appointment groups | 1. Create multiple appointments for same time slot<br>2. View in calendar | Appointments are grouped/linked appropriately |
 | TC-APP-4.5.6 | Appointment availability check | 1. Attempt to book appointment during unavailable slot | System shows conflict or prevents double-booking |
+| TC-APP-4.5.7 | Booking wizard — size/coat selection | 1. Start new appointment booking wizard<br>2. Select a pet with sizeCategory and coatType set<br>3. Observe the service/slot selection step | Size and coat type dropdowns are displayed and persist the pet's existing values |
+| TC-APP-4.5.8 | Large/X-Large pet slot duration reflects buffer | 1. Add a pet with sizeCategory = "large" or "x-large" to an appointment<br>2. Note the service duration<br>3. Complete booking and inspect the appointment | Appointment slot includes the service duration plus the configured buffer for the pet's size category |
+| TC-APP-4.5.9 | Appointment overrun cascades downstream | 1. Book three consecutive same-groomer appointments (A → B → C)<br>2. Manually extend appointment A's endTime so it overlaps B's startTime by ≥15 min<br>3. Observe appointment B | Appointment B (and C if still overlapping) is automatically shifted forward by the overrun delta + buffer; no error thrown |
+| TC-APP-4.5.10 | Cascaded appointments appear at new times | 1. Complete TC-APP-4.5.9<br>2. Check the calendar/list view | Appointments B and C are now shown at their shifted start/end times |
+| TC-APP-4.5.11 | Client receives reschedule notification email | 1. Complete TC-APP-4.5.9<br>2. Check the client's email (or notification log) | Client receives an email with subject/lines indicating their appointment was rescheduled from original time to new time |
+| TC-APP-4.5.12 | Appointment flagged when shift crosses day boundary | 1. Book appointment D for late afternoon (e.g. 17:30)<br>2. Extend a prior appointment so D would shift to the next day<br>3. Observe D | Appointment D is flagged for manual review and is NOT auto-shifted to the next day |
+| TC-APP-4.5.13 | Only scheduled/confirmed appointments are cascaded | 1. Start a cascade scenario (TC-APP-4.5.9) where a downstream appointment is already `in_progress`<br>2. Complete the cascade | The `in_progress` appointment is not shifted; cascade continues to next eligible appointment |
 
 ### 4.6 Services
 

apps/api/src/lib/cascade.ts

@@ -0,0 +1,281 @@
+import { eq, and, gt, gte, lt, ne, or, asc } from "@groombook/db";
+import { appointments, clients, pets, services, staff, type Db } from "@groombook/db";
+import { resolveBufferMinutes } from "./buffer.js";
+import { sendEmail, buildRescheduleNotificationEmail } from "../services/email.js";
+
+export interface CascadeResult {
+  shifted: ShiftedAppointment[];
+  flaggedForReview: FlaggedAppointment[];
+}
+
+export interface ShiftedAppointment {
+  id: string;
+  oldStartTime: Date;
+  oldEndTime: Date;
+  newStartTime: Date;
+  newEndTime: Date;
+  shiftDeltaMs: number;
+}
+
+export interface FlaggedAppointment {
+  id: string;
+  reason: string;
+  requestedStartTime: Date;
+  requestedEndTime: Date;
+}
+
+interface AppointmentWithGroomer {
+  id: string;
+  clientId: string;
+  petId: string;
+  serviceId: string;
+  staffId: string | null;
+  batherStaffId: string | null;
+  status: string;
+  startTime: Date;
+  endTime: Date;
+  bufferMinutes: number;
+}
+
+/**
+ * Detects and cascades appointment overruns to downstream same-groomer appointments.
+ *
+ * Trigger conditions:
+ * - PATCH extends endTime beyond the original endTime
+ * - Status transitions where current time exceeds endTime + bufferMinutes
+ *
+ * Guard rails:
+ * - Only shifts `scheduled` and `confirmed` appointments
+ * - Skips `in_progress`, `completed`, `cancelled`, `no_show`
+ * - Flags appointments that would fall outside business hours for manual review
+ */
+export async function detectAndCascadeOverrun({
+  db,
+  overrunningAppointmentId,
+  newEndTime,
+  originalEndTime,
+}: {
+  db: Db;
+  overrunningAppointmentId: string;
+  newEndTime: Date;
+  originalEndTime: Date;
+}): Promise<CascadeResult> {
+  const result: CascadeResult = { shifted: [], flaggedForReview: [] };
+
+  // Fetch the overrunning appointment to get groomer/staff info
+  const [overrunning] = await db
+    .select()
+    .from(appointments)
+    .where(eq(appointments.id, overrunningAppointmentId))
+    .limit(1);
+
+  if (!overrunning) return result;
+
+  const groomerId = overrunning.staffId;
+  if (!groomerId) return result;
+
+  // Determine the effective buffer for the overrunning appointment
+  const bufferMinutes = await resolveBufferMinutesForAppointment(db, overrunning);
+  const overrunEnd = newEndTime;
+  const effectiveEnd = new Date(overrunEnd.getTime() + bufferMinutes * 60_000);
+
+  // Query same-groomer appointments that start AFTER the overrunning appointment ends
+  // and are ordered by startTime ASC (nearest first)
+  const downstreamAppointments = await db
+    .select()
+    .from(appointments)
+    .where(
+      and(
+        eq(appointments.staffId, groomerId),
+        gt(appointments.startTime, overrunning.endTime),
+        or(
+          eq(appointments.status, "scheduled"),
+          eq(appointments.status, "confirmed")
+        )
+      )
+    )
+    .orderBy(asc(appointments.startTime));
+
+  // Track which appointments have been processed to avoid double-processing in cascade
+  const processedIds = new Set<string>();
+  processedIds.add(overrunningAppointmentId);
+
+  let currentOverrunEnd = effectiveEnd;
+
+  for (const downstream of downstreamAppointments) {
+    if (processedIds.has(downstream.id)) continue;
+
+    const downstreamBuffer = await resolveBufferMinutesForAppointment(db, downstream);
+
+    // Check if this downstream appointment conflicts with the current overrun end
+    const conflictThreshold = new Date(
+      currentOverrunEnd.getTime() + downstreamBuffer * 60_000
+    );
+
+    if (conflictThreshold <= downstream.startTime) {
+      // No conflict — cascade is complete
+      break;
+    }
+
+    // Conflict detected — need to shift this appointment
+    const shiftDeltaMs = conflictThreshold.getTime() - downstream.startTime.getTime();
+    const newStartTime = new Date(downstream.startTime.getTime() + shiftDeltaMs);
+    const newEndTime = new Date(downstream.endTime.getTime() + shiftDeltaMs);
+
+    // Check business hours (simple: only shift within same calendar day window for now)
+    // A more sophisticated implementation would check actual business hours from businessSettings
+    const isSameDay =
+      newStartTime.toDateString() === downstream.startTime.toDateString();
+
+    if (!isSameDay) {
+      result.flaggedForReview.push({
+        id: downstream.id,
+        reason: `Shifted appointment would fall on a different day (${newStartTime.toDateString()})`,
+        requestedStartTime: newStartTime,
+        requestedEndTime: newEndTime,
+      });
+      // Continue cascade check — we still process downstream appointments
+      currentOverrunEnd = newEndTime;
+      processedIds.add(downstream.id);
+      continue;
+    }
+
+    // Apply the shift
+    await db
+      .update(appointments)
+      .set({
+        startTime: newStartTime,
+        endTime: newEndTime,
+        updatedAt: new Date(),
+      })
+      .where(eq(appointments.id, downstream.id));
+
+    result.shifted.push({
+      id: downstream.id,
+      oldStartTime: downstream.startTime,
+      oldEndTime: downstream.endTime,
+      newStartTime,
+      newEndTime,
+      shiftDeltaMs,
+    });
+
+    // Update current overrun end for next iteration
+    currentOverrunEnd = newEndTime;
+    processedIds.add(downstream.id);
+  }
+
+  // Send notifications for all shifted appointments
+  for (const shifted of result.shifted) {
+    await notifyShiftedAppointment(db, shifted);
+  }
+
+  return result;
+}
+
+/**
+ * Determines if an appointment update represents an overrun that triggers cascade logic.
+ */
+export function isOverrun({
+  originalEndTime,
+  newEndTime,
+  originalStartTime,
+  newStartTime,
+  status,
+  currentTime,
+  bufferMinutes,
+}: {
+  originalEndTime: Date;
+  newEndTime: Date;
+  originalStartTime: Date;
+  newStartTime?: Date;
+  status: string;
+  currentTime: Date;
+  bufferMinutes: number;
+}): boolean {
+  // Case 1: endTime extended beyond original
+  if (newEndTime > originalEndTime) {
+    return true;
+  }
+
+  // Case 2: status transition where current time exceeds endTime + bufferMinutes
+  // This handles cases where an appointment ran long but wasn't explicitly rescheduled
+  if (
+    (status === "in_progress" || status === "completed") &&
+    currentTime > new Date(originalEndTime.getTime() + bufferMinutes * 60_000)
+  ) {
+    return true;
+  }
+
+  return false;
+}
+
+async function resolveBufferMinutesForAppointment(
+  db: Db,
+  appt: AppointmentWithGroomer
+): Promise<number> {
+  // First check if the appointment has an explicit bufferMinutes override
+  if (appt.bufferMinutes > 0) {
+    return appt.bufferMinutes;
+  }
+
+  // Fall back to buffer time rules based on service + pet characteristics
+  const [pet] = await db
+    .select({ sizeCategory: pets.sizeCategory, coatType: pets.coatType })
+    .from(pets)
+    .where(eq(pets.id, appt.petId))
+    .limit(1);
+
+  if (!pet) return 0;
+
+  return resolveBufferMinutes({
+    serviceId: appt.serviceId,
+    sizeCategory: pet.sizeCategory,
+    coatType: pet.coatType,
+    db,
+  });
+}
+
+async function notifyShiftedAppointment(
+  db: Db,
+  shifted: ShiftedAppointment
+): Promise<void> {
+  const [row] = await db
+    .select({
+      clientName: clients.name,
+      clientEmail: clients.email,
+      clientEmailOptOut: clients.emailOptOut,
+      petName: pets.name,
+      serviceName: services.name,
+      groomerName: staff.name,
+      appointmentStartTime: appointments.startTime,
+    })
+    .from(appointments)
+    .innerJoin(clients, eq(clients.id, appointments.clientId))
+    .innerJoin(pets, eq(pets.id, appointments.petId))
+    .innerJoin(services, eq(services.id, appointments.serviceId))
+    .leftJoin(staff, eq(staff.id, appointments.staffId))
+    .where(eq(appointments.id, shifted.id))
+    .limit(1);
+
+  if (!row) return;
+  const { clientName, clientEmail, clientEmailOptOut, petName, serviceName, groomerName } = row;
+
+  if (!clientEmail || clientEmailOptOut) return;
+  if (!petName || !serviceName) return;
+
+  console.log(
+    `[cascade] Notifying shift for appointment ${shifted.id}: ` +
+      `${shifted.oldStartTime.toISOString()} → ${shifted.newStartTime.toISOString()}`
+  );
+
+  await sendEmail(
+    buildRescheduleNotificationEmail(clientEmail, {
+      clientName,
+      petName,
+      serviceName,
+      groomerName: groomerName ?? null,
+      oldStartTime: shifted.oldStartTime,
+      newStartTime: shifted.newStartTime,
+    })
+  );
+}

apps/api/src/routes/appointments.ts

@@ -21,6 +21,10 @@ import {
 } from "@groombook/db";
 import { buildConfirmationEmail, sendEmail } from "../services/email.js";
 import { notifyWaitlistForAppointment } from "../services/waitlistNotify.js";
+import {
+  detectAndCascadeOverrun,
+  isOverrun,
+} from "../lib/cascade.js";
 import type { AppEnv } from "../middleware/rbac.js";
 
 async function withRetry<T>(
@@ -584,6 +588,7 @@ appointmentsRouter.patch(
       // (fixes #18). Also falls back to the existing staffId when staffId is
       // omitted from the request, so rescheduling always checks conflicts (fixes #19).
       let row: typeof appointments.$inferSelect | undefined;
+      let originalEndTime: Date | undefined;
       try {
         row = await db.transaction(async (tx) => {
           const [current] = await tx
@@ -595,6 +600,9 @@ appointmentsRouter.patch(
             throw Object.assign(new Error("not found"), { statusCode: 404 });
           }
 
+          // Preserve original endTime for cascade detection after update
+          originalEndTime = current.endTime;
+
           const start = updateFields.startTime
             ? new Date(updateFields.startTime)
             : current.startTime;
@@ -684,6 +692,29 @@ appointmentsRouter.patch(
       }
 
       if (!row) return c.json({ error: "Not found" }, 404);
+
+      // Cascade delay prevention: detect overrun and shift downstream appointments
+      if (
+        originalEndTime &&
+        updateFields.endTime &&
+        isOverrun({
+          originalEndTime,
+          newEndTime: new Date(updateFields.endTime),
+          originalStartTime: row.startTime,
+          status: row.status,
+          currentTime: new Date(),
+          bufferMinutes: row.bufferMinutes ?? 0,
+        })
+      ) {
+        const cascadeResult = await detectAndCascadeOverrun({
+          db,
+          overrunningAppointmentId: id,
+          newEndTime: new Date(updateFields.endTime),
+          originalEndTime,
+        });
+        return c.json({ ...row, cascade: cascadeResult });
+      }
+
       return c.json(row);
     }
 

apps/api/src/routes/book.ts

@@ -38,11 +38,13 @@ bookRouter.get("/services", async (c) => {
 
 // ─── GET /api/book/availability ─────────────────────────────────────────────
 // Public: return ISO startTime strings for slots where ≥1 groomer is free
-// Query params: serviceId (uuid), date (YYYY-MM-DD)
+// Query params: serviceId (uuid), date (YYYY-MM-DD), petSizeCategory, petCoatType
 
 bookRouter.get("/availability", async (c) => {
   const serviceId = c.req.query("serviceId");
   const dateStr = c.req.query("date");
+  const petSizeCategory = c.req.query("petSizeCategory") ?? undefined;
+  const petCoatType = c.req.query("petCoatType") ?? undefined;
 
   if (!serviceId || !dateStr) {
     return c.json({ error: "serviceId and date are required" }, 400);
@@ -58,6 +60,12 @@ bookRouter.get("/availability", async (c) => {
     .where(and(eq(services.id, serviceId), eq(services.active, true)));
   if (!service) return c.json({ error: "Service not found" }, 404);
 
+  // Buffer-aware duration: extra time for large/x-large or complex coats
+  const extraBuffer = (petSizeCategory === "large" || petSizeCategory === "x-large")
+    ? (service.defaultBufferMinutes ?? 0)
+    : 0;
+  const durationMinutes = service.durationMinutes + extraBuffer;
+
   const groomers = await db
     .select({ id: staff.id })
     .from(staff)
@@ -89,7 +97,7 @@ bookRouter.get("/availability", async (c) => {
 
   const slots = generateAvailableSlots({
     dateStr,
-    durationMinutes: service.durationMinutes,
+    durationMinutes,
     groomerIds: groomers.map((g) => g.id),
     booked,
   });
@@ -112,6 +120,12 @@ const bookingSchema = z.object({
   petName: z.string().min(1).max(200),
   petSpecies: z.string().min(1).max(100),
   petBreed: z.string().max(100).optional(),
+  petSizeCategory: z
+    .enum(["small", "medium", "large", "x-large"])
+    .optional(),
+  petCoatType: z
+    .enum(["smooth", "double", "curly", "wire", "long", "hairless"])
+    .optional(),
   notes: z.string().max(2000).optional(),
 });
 
@@ -129,7 +143,7 @@ bookRouter.post(
       .where(and(eq(services.id, body.serviceId), eq(services.active, true)));
     if (!service) return c.json({ error: "Service not found" }, 404);
 
-    const end = new Date(start.getTime() + service.durationMinutes * 60_000);
+    let end = new Date(start.getTime() + service.durationMinutes * 60_000);
 
     // Find all active groomers
     const groomers = await db
@@ -191,11 +205,18 @@ bookRouter.post(
         name: body.petName,
         species: body.petSpecies,
         breed: body.petBreed ?? null,
+        sizeCategory: body.petSizeCategory ?? null,
+        coatType: body.petCoatType ?? null,
       })
       .returning();
     const pet = petInserted[0];
     if (!pet) return c.json({ error: "Failed to create pet" }, 500);
 
+    // Buffer-aware end time: large/x-large pets add service bufferMinutes
+    if (body.petSizeCategory === "large" || body.petSizeCategory === "x-large") {
+      end = new Date(start.getTime() + (service.durationMinutes + (service.defaultBufferMinutes ?? 0)) * 60_000);
+    }
+
     // Insert appointment in a transaction to guard against race conditions
     let appointment;
     try {

apps/api/src/services/email.ts

@@ -201,3 +201,52 @@ export function buildWaitlistNotificationEmail(
 <p>— Groom Book</p>`,
   };
 }
+
+// ─── Reschedule notification email ────────────────────────────────────────────
+
+interface RescheduleEmailData {
+  clientName: string;
+  petName: string;
+  serviceName: string;
+  groomerName: string | null;
+  oldStartTime: Date;
+  newStartTime: Date;
+}
+
+export function buildRescheduleNotificationEmail(
+  to: string,
+  data: RescheduleEmailData
+): Mail.Options {
+  const oldTime = formatDateTime(data.oldStartTime);
+  const newTime = formatDateTime(data.newStartTime);
+  const groomer = data.groomerName ? ` with ${data.groomerName}` : "";
+  return {
+    to,
+    subject: `Appointment Rescheduled — ${data.petName}'s appointment has been moved`,
+    text: [
+      `Hi ${data.clientName},`,
+      ``,
+      `Your appointment has been rescheduled.`,
+      ``,
+      `  Pet:      ${data.petName}`,
+      `  Service:  ${data.serviceName}`,
+      `  Was:      ${oldTime}${groomer}`,
+      `  Now:      ${newTime}${groomer}`,
+      ``,
+      `If you have any questions or need to make changes, please contact us.`,
+      ``,
+      `— Groom Book`,
+    ].join("\n"),
+    html: `
+<p>Hi ${data.clientName},</p>
+<p>Your appointment has been <strong>rescheduled</strong>.</p>
+<table style="border-collapse:collapse;margin:1em 0">
+  <tr><td style="padding:4px 12px 4px 0;font-weight:600;color:#6b7280">Pet</td><td>${data.petName}</td></tr>
+  <tr><td style="padding:4px 12px 4px 0;font-weight:600;color:#6b7280">Service</td><td>${data.serviceName}</td></tr>
+  <tr><td style="padding:4px 12px 4px 0;font-weight:600;color:#ef4444">Was</td><td style="text-decoration:line-through;color:#ef4444">${oldTime}${groomer}</td></tr>
+  <tr><td style="padding:4px 12px 4px 0;font-weight:600;color:#10b981">Now</td><td style="color:#10b981">${newTime}${groomer}</td></tr>
+</table>
+<p>If you have any questions or need to make changes, please contact us.</p>
+<p>— Groom Book</p>`,
+  };
+}

apps/web/src/pages/Book.tsx

@@ -13,6 +13,8 @@ interface BookingBody {
   petName: string;
   petSpecies: string;
   petBreed: string;
+  petSizeCategory: string;
+  petCoatType: string;
   notes: string;
 }
 
@@ -123,6 +125,8 @@ export function BookPage() {
     petName: "",
     petSpecies: "",
     petBreed: "",
+    petSizeCategory: "",
+    petCoatType: "",
     notes: "",
   });
   const [formError, setFormError] = useState<string | null>(null);
@@ -168,14 +172,18 @@ export function BookPage() {
     if (!selectedService || !date) return;
     setSlotsLoading(true);
     setSelectedSlot(null);
-    fetch(
-      `/api/book/availability?serviceId=${encodeURIComponent(selectedService.id)}&date=${encodeURIComponent(date)}`
-    )
+    const params = new URLSearchParams({
+      serviceId: selectedService.id,
+      date,
+    });
+    if (form.petSizeCategory) params.set("petSizeCategory", form.petSizeCategory);
+    if (form.petCoatType) params.set("petCoatType", form.petCoatType);
+    fetch(`/api/book/availability?${params}`)
       .then((r) => r.json() as Promise<string[]>)
       .then(setSlots)
       .catch(() => setSlots([]))
       .finally(() => setSlotsLoading(false));
-  }, [selectedService, date]);
+  }, [selectedService, date, form.petSizeCategory, form.petCoatType]);
 
   function goToStep2(svc: Service) {
     setSelectedService(svc);
@@ -214,6 +222,8 @@ export function BookPage() {
           petName: form.petName,
           petSpecies: form.petSpecies,
           petBreed: form.petBreed || undefined,
+          petSizeCategory: form.petSizeCategory || undefined,
+          petCoatType: form.petCoatType || undefined,
           notes: form.notes || undefined,
         }),
       });
@@ -494,6 +504,36 @@ export function BookPage() {
                     placeholder="Golden Retriever"
                   />
                 </div>
+                <div>
+                  <label style={label}>Pet size (optional, but encouraged)</label>
+                  <select
+                    style={input}
+                    value={form.petSizeCategory}
+                    onChange={(e) => setForm((f) => ({ ...f, petSizeCategory: e.target.value }))}
+                  >
+                    <option value="">Select size…</option>
+                    <option value="small">Small (under 15 lbs)</option>
+                    <option value="medium">Medium (15–40 lbs)</option>
+                    <option value="large">Large (40–80 lbs)</option>
+                    <option value="x-large">X-Large (over 80 lbs)</option>
+                  </select>
+                </div>
+                <div>
+                  <label style={label}>Coat type (optional, but encouraged)</label>
+                  <select
+                    style={input}
+                    value={form.petCoatType}
+                    onChange={(e) => setForm((f) => ({ ...f, petCoatType: e.target.value }))}
+                  >
+                    <option value="">Select coat type…</option>
+                    <option value="smooth">Smooth</option>
+                    <option value="double">Double</option>
+                    <option value="curly">Curly</option>
+                    <option value="wire">Wire</option>
+                    <option value="long">Long</option>
+                    <option value="hairless">Hairless</option>
+                  </select>
+                </div>
                 <div>
                   <label style={label}>Notes for groomer</label>
                   <textarea
@@ -528,7 +568,7 @@ export function BookPage() {
               <div>
                 <div style={{ color: "#9ca3af", fontSize: 12, fontWeight: 600, textTransform: "uppercase" }}>Service</div>
                 <div style={{ fontWeight: 600 }}>{selectedService.name}</div>
-                <div style={{ color: "#6b7280" }}>{fmtPrice(selectedService.basePriceCents)} · {fmtDuration(selectedService.durationMinutes)}</div>
+                <div style={{ color: "#6b7280" }}>{fmtPrice(selectedService.basePriceCents)} · {fmtDuration(selectedService.durationMinutes + ((form.petSizeCategory === "large" || form.petSizeCategory === "x-large") ? (selectedService.defaultBufferMinutes ?? 0) : 0))}</div>
               </div>
               <div>
                 <div style={{ color: "#9ca3af", fontSize: 12, fontWeight: 600, textTransform: "uppercase" }}>Date & Time</div>
@@ -599,7 +639,8 @@ export function BookPage() {
               setResult(null);
               setForm({
                 serviceId: "", startTime: "", clientName: "", clientEmail: "",
-                clientPhone: "", petName: "", petSpecies: "", petBreed: "", notes: "",
+                clientPhone: "", petName: "", petSpecies: "", petBreed: "",
+                petSizeCategory: "", petCoatType: "", notes: "",
               });
             }}
           >

packages/db/src/schema.ts

@@ -151,6 +151,8 @@ export const pets = pgTable(
     name: text("name").notNull(),
     species: text("species").notNull(),
     breed: text("breed"),
+    sizeCategory: petSizeCategoryEnum("size_category"),
+    coatType: coatTypeEnum("coat_type"),
     weightKg: numeric("weight_kg", { precision: 5, scale: 2 }),
     dateOfBirth: timestamp("date_of_birth"),
     healthAlerts: text("health_alerts"),
@@ -162,8 +164,6 @@ export const pets = pgTable(
     photoKey: text("photo_key"),
     photoUploadedAt: timestamp("photo_uploaded_at"),
     image: text("image"),
-    sizeCategory: petSizeCategoryEnum("size_category"),
-    coatType: coatTypeEnum("coat_type"),
     createdAt: timestamp("created_at").notNull().defaultNow(),
     updatedAt: timestamp("updated_at").notNull().defaultNow(),
   },

packages/types/src/index.ts

@@ -64,6 +64,7 @@ export interface Service {
   description: string | null;
   basePriceCents: number;
   durationMinutes: number;
+  defaultBufferMinutes: number;
   active: boolean;
   createdAt: string;
   updatedAt: string;