Remove Proxy and Email Notifications

[zupzup]

• Cleanup Static File Server, Proxy and Email Notifications in bcr-relay
• In preparation for moving this repo to Wildcat-Aux

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 23.52%. Comparing base (7e5bca9) to head (9dfda0b).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/main.rs	0.00%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master      #22       +/-   ##
===========================================
+ Coverage   10.23%   23.52%   +13.29%     
===========================================
  Files          13        6        -7     
  Lines        1465      340     -1125     
===========================================
- Hits          150       80       -70     
+ Misses       1315      260     -1055     

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[Copilot]

Pull request overview

This PR removes the proxy and email notification subsystems (including their routes, templates, and DB tables) and simplifies the runtime/container setup accordingly, as part of general cleanup ahead of moving the repo.

Changes:

• Removed proxy and email notification modules, endpoints, and associated utilities/templates.
• Removed notification-related Postgres schema initialization.
• Simplified runtime packaging by dropping static file serving/copying and trimming reported relay features.

Reviewed changes

Copilot reviewed 15 out of 17 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
static/logo.png	Removed static asset (static file serving no longer exposed).
src/util.rs	Removed shared helpers that were only used by proxy/notifications.
src/proxy/mod.rs	Removed proxy endpoint implementation and supporting code.
src/notification/mod.rs	Removed notification HTTP API and HTML rendering logic.
src/notification/*	Removed notification preferences/store/email implementation and templates.
src/relay.rs	Removed email-related config fields; relay remains focused on Nostr + rate limiting.
src/rate_limit.rs	Removed HTTP-facing rate limiter/RealIp extraction; retained sliding-window limiter for relay policies.
src/main.rs	Removed static serving and proxy/notification routes; updated advertised relay features and app state.
src/db/mod.rs	Removed creation of notification-specific tables.
Dockerfile	Stopped copying static assets into the runtime image.
Cargo.toml	Removed several deps, but still includes now-unused direct deps (see comments).
Cargo.lock	Reflected dependency graph changes and patch-level updates.

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