Fix what a full test round of today's releases found: a ticking single clock, a switch that works in standby, no taps from a swipe (0.2.78)

A test and code-analysis round of 0.2.72 to 0.2.76 (suites at every tag, sanitizers, ESP32 and GitHub builds, host
harnesses on both boards, the editor in a browser, best practice checked against ESPHome, LVGL, Home Assistant and
Vue) found these, fixed here with Max's choices for the product questions:

- Firmware 0.2.65: the second hand of a single analog clock moves again; on a page that is one full on/off tile the
  waking push also switches it; on the Guition a flick is never a tap and a finger that slides off a tile doesn't tap
  it; Previous/Next react to a firm press; the same Go to page tile may sit on several pages; a layout the screen has
  no memory for is refused instead of crashing; 64-bit redraw mask for 48 tiles; Montserrat 14 no longer built.
- App: Save refuses a layout too long for one message or too big for eight pages; an offline screen keeps its
  firmware version from the device registry; HA refusals reach the editor; 128 KB requests; changelog out of the
  live stream; cached hashed assets; tini as init and a clean stop; changelog parsing without asterisks or crashes.
- Editor: clicking the open screen keeps unsaved edits, edits during a save stay unsaved, a Page row and phone
  dragging to other pages, repeated page tiles, limits from the server, HA's error messages, a type-checked build.
- tools/check.sh + GitHub Actions + a CYD flash budget; docs match 48 tiles and the new editor.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

tests/test_release_lint.py

@@ -0,0 +1,71 @@
+"""Release lint (app 0.2.78): the version numbers of a release agree, and the packages fetch only fonts that exist.
+
+Every push to main is a release (docs/RELEASING.md), so these run with the rest of the suite in tools/check.sh and CI.
+Standard library only.
+"""
+from pathlib import Path
+import re
+import sys
+import unittest
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / 'screen_manager/app'))
+from core import FIRMWARE_VERSION  # noqa: E402
+
+CHANGELOG = ROOT / 'screen_manager/CHANGELOG.md'
+# An app release: "## 0.2.76 (firmware 0.2.63)"; the oldest ones name no firmware. The two "## Firmware 0.2.1x"
+# sections are firmware-only releases between app 0.2.11 and 0.2.12 and carry no app version, so they don't count.
+APP_HEADING = re.compile(r'^## (\d+)\.(\d+)\.(\d+)\b(.*)$', re.M)
+FIRMWARE_IN_HEADING = re.compile(r'\(firmware (\d+\.\d+\.\d+)\)')
+# The generator (tools/generate_packages.py) turns fonts/<file> into a raw GitHub URL on main.
+FONT_URL = re.compile(r'https://raw\.githubusercontent\.com/MaxGramser/homeassistant_espscreen/[^/\s"\']+/(fonts/[^"\'\s]+)')
+
+
+def app_headings():
+    """[(version tuple, text after the version)] of the CHANGELOG, top to bottom."""
+    return [((int(a), int(b), int(c)), rest) for a, b, c, rest in APP_HEADING.findall(CHANGELOG.read_text())]
+
+
+def dotted(version):
+    return '.'.join(map(str, version))
+
+
+class ReleaseVersionTests(unittest.TestCase):
+    def test_config_version_is_the_newest_changelog_entry(self):
+        match = re.search(r'^version:\s*["\']?([^"\'\s]+)["\']?\s*$', (ROOT / 'screen_manager/config.yaml').read_text(), re.M)
+        self.assertIsNotNone(match, 'screen_manager/config.yaml has no version line')
+        headings = app_headings()
+        self.assertTrue(headings, 'screen_manager/CHANGELOG.md has no "## x.y.z" heading')
+        self.assertEqual(match.group(1), dotted(headings[0][0]),
+                         'Home Assistant offers the update by config.yaml: bump it together with a new CHANGELOG entry')
+
+    def test_newest_entry_names_the_shipped_firmware(self):
+        version, rest = app_headings()[0]
+        firmware = FIRMWARE_IN_HEADING.search(rest)
+        if firmware:
+            self.assertEqual(firmware.group(1), FIRMWARE_VERSION,
+                             f'CHANGELOG {dotted(version)} names firmware {firmware.group(1)}, core.FIRMWARE_VERSION is {FIRMWARE_VERSION}')
+
+    def test_changelog_versions_are_unique_and_newest_first(self):
+        versions = [version for version, _ in app_headings()]
+        duplicates = sorted({dotted(v) for v in versions if versions.count(v) > 1})
+        self.assertEqual(duplicates, [], 'a CHANGELOG version appears twice')
+        for newer, older in zip(versions, versions[1:]):
+            self.assertGreater(newer, older, f'CHANGELOG {dotted(newer)} stands above {dotted(older)}')
+
+
+class PackageFontTests(unittest.TestCase):
+    def test_every_font_a_package_fetches_is_in_the_tree(self):
+        packages = sorted((ROOT / 'packages').glob('*.yaml'))
+        self.assertTrue(packages, 'no packages/*.yaml')
+        seen = 0
+        for package in packages:
+            for path in FONT_URL.findall(package.read_text()):
+                seen += 1
+                self.assertTrue((ROOT / path).is_file(), f'{package.name} fetches {path}, which is not in the tree')
+        # A changed URL form must not turn this into a test of nothing.
+        self.assertGreater(seen, 0, 'no fonts/... URL found in packages/*.yaml')
+
+
+if __name__ == '__main__':
+    unittest.main()