feat: SPA routing, projects/resume sections, deployment infra

- Add client-side router with History API pushState (router.ts, pages.ts)
- Extend overlay with projects grid/category/detail views and resume section
- Add Gitea CI/CD workflow and webhook deployment server
- Improve Docker Compose with nginx reverse proxy config
- Add deployment script and .env.example

webhook/server.py

@@ -0,0 +1,138 @@
+#!/usr/bin/env python3
+"""
+Gitea webhook receiver — listens for push events and triggers a docker-compose
+redeploy with zero-downtime (rebuild + restart only the changed service).
+
+Usage:
+    WEBHOOK_SECRET=... REPO_DIR=/home/djoser/webgpu-portfolio python3 server.py
+
+Environment:
+    WEBHOOK_SECRET  Gitea webhook secret (HMAC-SHA256)         [required]
+    REPO_DIR        Path to the repo with docker-compose.yml   [default: .]
+    LISTEN_HOST     Bind address                               [default: 0.0.0.0]
+    LISTEN_PORT     Port                                       [default: 9000]
+"""
+
+import hashlib
+import hmac
+import http.server
+import json
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+
+# ---- config ----
+
+SECRET = os.environ.get("WEBHOOK_SECRET", "").encode()
+REPO_DIR = Path(os.environ.get("REPO_DIR", Path.cwd()))
+HOST = os.environ.get("LISTEN_HOST", "0.0.0.0")
+PORT = int(os.environ.get("LISTEN_PORT", "9000"))
+
+
+def verify_signature(body: bytes, header: str) -> bool:
+    """Verify Gitea's X-Gitea-Signature header against the shared secret."""
+    if not SECRET:
+        print("[webhook] WARNING: WEBHOOK_SECRET is empty — accepting all requests", flush=True)
+        return True
+    if not header:
+        return False
+    expected = hmac.new(SECRET, body, hashlib.sha256).hexdigest()
+    return hmac.compare_digest(expected, header)
+
+
+def deploy() -> tuple[int, str]:
+    """Run 'git pull' + 'docker compose up -d --build' in REPO_DIR."""
+    steps = [
+        # Pull latest code
+        (["git", "pull", "origin", "master"], "git pull"),
+        # Rebuild + restart only the web container (nginx-proxy doesn't change)
+        (["docker", "compose", "up", "-d", "--build", "--remove-orphans"], "docker compose up"),
+    ]
+
+    for cmd, label in steps:
+        result = subprocess.run(
+            cmd,
+            cwd=REPO_DIR,
+            capture_output=True,
+            text=True,
+            timeout=120,
+        )
+        if result.returncode != 0:
+            return 1, f"{label} failed (exit {result.returncode}):\n{result.stderr.strip()}"
+        print(f"[webhook] {label}: ok", flush=True)
+
+    return 0, "deploy ok"
+
+
+class WebhookHandler(http.server.BaseHTTPRequestHandler):
+    def log_message(self, fmt: str, *args) -> None:
+        print(f"[webhook] {self.client_address[0]} — {fmt % args}", flush=True)
+
+    def do_POST(self) -> None:
+        content_length = int(self.headers.get("Content-Length", "0"))
+        body = self.rfile.read(content_length)
+
+        # Verify signature
+        signature = self.headers.get("X-Gitea-Signature", "")
+        if not verify_signature(body, signature):
+            self.send_error(403, "Bad signature")
+            return
+
+        # Parse event
+        event_type = self.headers.get("X-Gitea-Event", "")
+        if event_type != "push":
+            self.send_response(200)
+            self.end_headers()
+            self.wfile.write(f'{{"status":"ignored","event":"{event_type}"}}\n'.encode())
+            return
+
+        try:
+            payload = json.loads(body)
+        except json.JSONDecodeError:
+            self.send_error(400, "Invalid JSON")
+            return
+
+        ref = payload.get("ref", "")
+        print(f"[webhook] push on {ref} — deploying...", flush=True)
+
+        exit_code, msg = deploy()
+        if exit_code == 0:
+            self.send_response(200)
+            self.end_headers()
+            self.wfile.write(b'{"status":"ok"}\n')
+        else:
+            self.send_response(500)
+            self.end_headers()
+            self.wfile.write(f'{{"status":"error","detail":{json.dumps(msg)}}}\n'.encode())
+
+    def do_GET(self) -> None:
+        """Health-check endpoint."""
+        if self.path == "/health":
+            self.send_response(200)
+            self.end_headers()
+            self.wfile.write(b"ok\n")
+        else:
+            self.send_error(405, "Method not allowed")
+
+
+def main() -> None:
+    if not SECRET:
+        print(
+            "[webhook] WARNING: WEBHOOK_SECRET is empty. Set it for security.\n"
+            "          Generate one:  openssl rand -hex 32",
+            flush=True,
+        )
+
+    server = http.server.HTTPServer((HOST, PORT), WebhookHandler)
+    print(f"[webhook] Listening on {HOST}:{PORT}  (repo dir: {REPO_DIR})", flush=True)
+    try:
+        server.serve_forever()
+    except KeyboardInterrupt:
+        print("\n[webhook] Shutting down.", flush=True)
+        server.shutdown()
+
+
+if __name__ == "__main__":
+    main()