chore: clean up duplicate task-016 files

Removed auto-generated duplicates that were overwritten.
Correct tasks are now task-018 and task-019.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

backlog/tasks/task-015 - Set-up-Cloudflare-D1-email-collector-database-for-cross-site-subscriptions.md

@@ -4,6 +4,7 @@ title: Set up Cloudflare D1 email-collector database for cross-site subscription
 status: To Do
 assignee: []
 created_date: '2025-12-04 12:00'
+updated_date: '2025-12-04 12:03'
 labels:
   - infrastructure
   - cloudflare
@@ -51,3 +52,95 @@ Create a standalone Cloudflare D1 database for collecting email subscriptions ac
 - [ ] #7 Rate limiting prevents spam submissions
 - [ ] #8 At least one site integrated and collecting emails
 <!-- AC:END -->
+
+## Implementation Plan
+
+<!-- SECTION:PLAN:BEGIN -->
+## Implementation Steps
+
+### 1. Create D1 Database
+```bash
+wrangler d1 create email-collector
+```
+
+### 2. Create Schema File
+Create `worker/email-collector-schema.sql`:
+
+```sql
+-- Email Collector Schema
+-- Cross-site email subscription management
+
+CREATE TABLE IF NOT EXISTS subscribers (
+  id TEXT PRIMARY KEY,
+  email TEXT NOT NULL,
+  email_hash TEXT NOT NULL,  -- For duplicate checking
+  source_site TEXT NOT NULL,
+  source_page TEXT,
+  referrer TEXT,
+  ip_country TEXT,
+  subscribed_at TEXT DEFAULT (datetime('now')),
+  verified INTEGER DEFAULT 0,
+  verified_at TEXT,
+  unsubscribed INTEGER DEFAULT 0,
+  unsubscribed_at TEXT,
+  metadata TEXT  -- JSON for custom fields
+);
+
+CREATE TABLE IF NOT EXISTS verification_tokens (
+  id TEXT PRIMARY KEY,
+  email TEXT NOT NULL,
+  token TEXT UNIQUE NOT NULL,
+  expires_at TEXT NOT NULL,
+  used INTEGER DEFAULT 0,
+  created_at TEXT DEFAULT (datetime('now'))
+);
+
+-- Rate limiting table
+CREATE TABLE IF NOT EXISTS rate_limits (
+  ip_hash TEXT PRIMARY KEY,
+  request_count INTEGER DEFAULT 1,
+  window_start TEXT DEFAULT (datetime('now'))
+);
+
+-- Indexes
+CREATE INDEX IF NOT EXISTS idx_subs_email_hash ON subscribers(email_hash);
+CREATE INDEX IF NOT EXISTS idx_subs_site ON subscribers(source_site);
+CREATE INDEX IF NOT EXISTS idx_subs_page ON subscribers(source_site, source_page);
+CREATE INDEX IF NOT EXISTS idx_subs_verified ON subscribers(verified);
+CREATE UNIQUE INDEX IF NOT EXISTS idx_subs_unique ON subscribers(email_hash, source_site);
+CREATE INDEX IF NOT EXISTS idx_tokens_token ON verification_tokens(token);
+```
+
+### 3. Create Worker Endpoints
+Create `worker/emailCollector.ts`:
+
+```typescript
+// POST /api/subscribe
+// GET /api/verify/:token
+// POST /api/unsubscribe
+// GET /api/emails/export (auth required)
+// GET /api/emails/stats
+```
+
+### 4. Export Formats
+- CSV: `email,source_site,source_page,subscribed_at,verified`
+- JSON: Full object array
+- Mailchimp: CSV with required headers
+
+### 5. Admin Authentication
+- Use simple API key for export endpoint
+- Store in Worker secret: `EMAIL_ADMIN_KEY`
+
+### 6. Integration
+Add to each site's signup form:
+```javascript
+fetch('https://canvas.jeffemmett.com/api/subscribe', {
+  method: 'POST',
+  body: JSON.stringify({
+    email: 'user@example.com',
+    source_site: 'mycofi.earth',
+    source_page: '/newsletter'
+  })
+})
+```
+<!-- SECTION:PLAN:END -->

backlog/tasks/task-016 - Create-Cloudflare-D1-cryptid-auth-database.md

@@ -1,43 +0,0 @@
----
-id: task-016
-title: Create Cloudflare D1 cryptid-auth database
-status: To Do
-assignee: []
-created_date: '2025-12-04 12:00'
-labels:
-  - infrastructure
-  - cloudflare
-  - d1
-  - cryptid
-  - auth
-  - security
-dependencies: []
-priority: high
----
-
-## Description
-
-<!-- SECTION:DESCRIPTION:BEGIN -->
-Create the D1 database on Cloudflare for CryptID authentication system. This is the first step before deploying the email recovery feature.
-
-**Database Purpose:**
-- Store user accounts linked to CryptID usernames
-- Store device public keys for multi-device auth
-- Store verification tokens for email/device linking
-- Enable account recovery via verified email
-
-**Security Considerations:**
-- Emails should be encrypted at rest (Phase 2)
-- Public keys are safe to store (not secrets)
-- Tokens are time-limited and single-use
-- No passwords stored (WebCrypto key-based auth)
-<!-- SECTION:DESCRIPTION:END -->
-
-## Acceptance Criteria
-<!-- AC:BEGIN -->
-- [ ] #1 D1 database 'cryptid-auth' created via wrangler d1 create
-- [ ] #2 D1 database 'cryptid-auth-dev' created for dev environment
-- [ ] #3 Database IDs added to wrangler.toml (replacing placeholders)
-- [ ] #4 Schema from worker/schema.sql deployed to both databases
-- [ ] #5 Verified tables exist: users, device_keys, verification_tokens
-<!-- AC:END -->

backlog/tasks/task-017 - Deploy-CryptID-email-recovery-to-dev-branch-and-test.md

@@ -4,6 +4,7 @@ title: Deploy CryptID email recovery to dev branch and test
 status: To Do
 assignee: []
 created_date: '2025-12-04 12:00'
+updated_date: '2025-12-04 12:02'
 labels:
   - feature
   - cryptid
@@ -11,8 +12,8 @@ labels:
   - testing
   - dev-branch
 dependencies:
-  - task-015
-  - task-016
+  - task-018
+  - task-019
 priority: high
 ---
 

backlog/tasks/task-018 - Create-Cloudflare-D1-cryptid-auth-database.md

@@ -0,0 +1,103 @@
+---
+id: task-018
+title: Create Cloudflare D1 cryptid-auth database
+status: To Do
+assignee: []
+created_date: '2025-12-04 12:02'
+updated_date: '2025-12-04 12:02'
+labels:
+  - infrastructure
+  - cloudflare
+  - d1
+  - cryptid
+  - auth
+dependencies: []
+priority: high
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+Create the D1 database on Cloudflare for CryptID authentication system. This is the first step before deploying the email recovery feature.
+
+**Database Purpose:**
+- Store user accounts linked to CryptID usernames
+- Store device public keys for multi-device auth
+- Store verification tokens for email/device linking
+- Enable account recovery via verified email
+
+**Security Considerations:**
+- Emails should be encrypted at rest (task-016)
+- Public keys are safe to store (not secrets)
+- Tokens are time-limited and single-use
+- No passwords stored (WebCrypto key-based auth)
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+<!-- AC:BEGIN -->
+- [ ] #1 D1 database 'cryptid-auth' created via wrangler d1 create
+- [ ] #2 D1 database 'cryptid-auth-dev' created for dev environment
+- [ ] #3 Database IDs added to wrangler.toml (replacing placeholders)
+- [ ] #4 Schema from worker/schema.sql deployed to both databases
+- [ ] #5 Verified tables exist: users, device_keys, verification_tokens
+<!-- AC:END -->
+
+## Implementation Plan
+
+<!-- SECTION:PLAN:BEGIN -->
+## Implementation Steps
+
+### 1. Create D1 Databases
+Run from local machine or Netcup (requires wrangler CLI):
+
+```bash
+cd /home/jeffe/Github/canvas-website
+
+# Create production database
+wrangler d1 create cryptid-auth
+
+# Create dev database
+wrangler d1 create cryptid-auth-dev
+```
+
+### 2. Update wrangler.toml
+Replace placeholder IDs with actual database IDs from step 1:
+
+```toml
+[[d1_databases]]
+binding = "CRYPTID_DB"
+database_name = "cryptid-auth"
+database_id = "<PROD_ID_FROM_STEP_1>"
+
+[[env.dev.d1_databases]]
+binding = "CRYPTID_DB"
+database_name = "cryptid-auth-dev"
+database_id = "<DEV_ID_FROM_STEP_1>"
+```
+
+### 3. Deploy Schema
+```bash
+# Deploy to dev first
+wrangler d1 execute cryptid-auth-dev --file=./worker/schema.sql
+
+# Then production
+wrangler d1 execute cryptid-auth --file=./worker/schema.sql
+```
+
+### 4. Verify Tables
+```bash
+# Check dev
+wrangler d1 execute cryptid-auth-dev --command="SELECT name FROM sqlite_master WHERE type='table';"
+
+# Expected output:
+# - users
+# - device_keys
+# - verification_tokens
+```
+
+### 5. Commit wrangler.toml Changes
+```bash
+git add wrangler.toml
+git commit -m "chore: add D1 database IDs for cryptid-auth"
+```
+<!-- SECTION:PLAN:END -->

backlog/tasks/task-019 - Configure-CryptID-secrets-and-SendGrid-integration.md

@@ -1,17 +1,17 @@
 ---
-id: task-016
-title: Configure CryptID secrets and environment variables
+id: task-019
+title: Configure CryptID secrets and SendGrid integration
 status: To Do
 assignee: []
-created_date: '2025-12-04 12:00'
+created_date: '2025-12-04 12:02'
 labels:
   - infrastructure
   - cloudflare
   - cryptid
   - secrets
-  - email
+  - sendgrid
 dependencies:
-  - task-015
+  - task-018
 priority: high
 ---