Replace all Coolify branding with MapleDeploy across 111 files:
- Logo, favicon, and color palette (Canadian red scale, stone greys)
- Fonts: Overlock for headings, Inter for body (self-hosted woff2/ttf)
- All ~70 page titles updated to "| MapleDeploy"
- Auth pages, navbar, footer, email templates, settings, boarding flow
- Remove Hetzner provider, Coolify Cloud upsells, sponsorship popups
- Disable telemetry (Sentry DSN null, undead.coolify.io ping disabled)
- Point auto-update to MapleDeploy Forgejo registry image
- Redirect help/support links to mapledeploy.ca/contact
- Add AGPL source code link to Forgejo repo in navbar
- OpenAPI docs rebranded to MapleDeploy
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