v1.9.1: PNG Material Design icons — 28 icons, dark/light theme, HiDPI, graceful Unicode fallback

- 56 PNG icons (28 unique × 2 color variants) from Material Design Icons (round style, 96×96px)
- core/icons.py: ctk_icon(), make_icon_button(), reconfigure_icon_button() with CTkImage cache
- Updated 15 GUI files: app.py, sidebar.py, server_dialog.py, all tabs
- build.py: auto-include assets/icons/ in PyInstaller bundle, patch rollover at 99→minor+1
- tools/download_icons.py: icon download script
- Automatic dark↔light theme switching via CTkImage dual-image support

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

build.py

@@ -36,7 +36,13 @@ def auto_bump_version() -> str:
         sys.exit(1)
 
     major, minor, patch = int(match.group(1)), int(match.group(2)), int(match.group(3))
-    new_patch = patch + 1
+
+    # Patch grows up to 99, then minor+1 and patch resets to 1
+    if patch >= 99:
+        minor += 1
+        new_patch = 1
+    else:
+        new_patch = patch + 1
     new_version = f"{major}.{minor}.{new_patch}"
 
     content = re.sub(
@@ -111,6 +117,13 @@ def build():
         "--add-data", f"core/encryption.py{os.pathsep}core",
     ]
 
+    # PNG icons for GUI (Material Design)
+    icons_dir = os.path.join(PROJECT_DIR, "assets", "icons")
+    if os.path.isdir(icons_dir):
+        cmd_parts.extend(["--add-data", f"assets/icons{os.pathsep}assets/icons"])
+    else:
+        print("WARNING: assets/icons/ not found, building without PNG icons")
+
     # Icon
     icon_path = os.path.join(PROJECT_DIR, "assets", "icon.ico")
     if os.path.exists(icon_path):
@@ -194,6 +207,47 @@ def _get_gitea_auth() -> dict:
 _GITEA_API = "https://git.sensey24.ru/api/v1/repos/aibot777/server-manager"
 
 
+def _generate_changelog() -> str:
+    """Generate changelog from git commits since previous tag."""
+    try:
+        # Get all tags sorted by semver
+        raw = subprocess.check_output(
+            ["git", "tag", "--list", "v*"],
+            text=True, stderr=subprocess.DEVNULL,
+        ).strip()
+        tags = [t for t in raw.splitlines() if re.match(r'^v\d+\.\d+\.\d+$', t)]
+        tags.sort(key=lambda t: tuple(int(x) for x in t[1:].split(".")))
+
+        current_tag = f"v{__version__}"
+        # Find previous tag (exclude current if it exists)
+        prev_tags = [t for t in tags if t != current_tag]
+        if prev_tags:
+            prev_tag = prev_tags[-1]
+            log_range = f"{prev_tag}..HEAD"
+        else:
+            log_range = "HEAD~20..HEAD"
+
+        # Get commits
+        raw_log = subprocess.check_output(
+            ["git", "log", log_range, "--oneline", "--no-merges"],
+            text=True, stderr=subprocess.DEVNULL,
+        ).strip()
+
+        if not raw_log:
+            return f"Release {current_tag}"
+
+        # Format: strip commit hash, keep message
+        lines = []
+        for line in raw_log.splitlines():
+            parts = line.split(" ", 1)
+            if len(parts) == 2:
+                lines.append(f"- {parts[1]}")
+        return f"## What's New in {current_tag}\n\n" + "\n".join(lines)
+    except Exception as exc:
+        print(f"Changelog generation failed: {exc}")
+        return f"Release v{__version__}"
+
+
 def publish_gitea_release(exe_path: str):
     """Create a Gitea release and upload the exe as asset."""
     auth = _get_gitea_auth()
@@ -203,13 +257,14 @@ def publish_gitea_release(exe_path: str):
 
     tag = f"v{__version__}"
     filename = os.path.basename(exe_path)
+    changelog = _generate_changelog()
 
     # Create release
     try:
         data = json.dumps({
             "tag_name": tag,
             "name": tag,
-            "body": f"Release {tag}",
+            "body": changelog,
         }).encode()
         req = urllib.request.Request(
             f"{_GITEA_API}/releases",