fix(air-quality): show the Weather card, add voice support and bound the feed

The card never appeared: the Weather panel only passed five fixed ids and only
rendered lists and categorical legends for cyclones. Air quality now reaches
the panel, the legend style comes from the layer's descriptor, and any layer
with list items gets its list. Adds the voice manifest entry main now requires,
reads ECCC through the shared capped JSON reader with a 15 s deadline and the
row limit enforced, reports stale when every reading was too old, adds source
tests, links the ECCC licence and moves the changelog entry into Unreleased.

src/firstRunExperience.test.mjs

@@ -674,10 +674,11 @@ test('the voice TOOL SCHEMA matches the pinned contract — the mission mapping
   // schema, which may not carry top-level anyOf), and Contacts requested-radius
   // list descriptions; the missions still ride existing tools.
   // Street Level and GNSS extend the manifest; broadcast caveats describe tracked and analyst aircraft.
-  assert.equal(block.length, 30511, 'serialized tool schema length drifted');
+  // Air quality (ECCC AQHI) extends the manifest.
+  assert.equal(block.length, 30655, 'serialized tool schema length drifted');
   assert.equal(
     crypto.createHash('sha256').update(block).digest('hex'),
-    '62d5df9cedf413403e4fd0a7cbe94bb2cd13736c3d8fedc84bcccd63ad253eb6',
+    '3b1d5e77c10a92f6543a4f9d1ff1870101a0306b65e5b8a6113111c81eda371e',
     'the first-run missions must ride EXISTING tools: no schema edit, no cache bust',
   );
   const instructions = fs.readFileSync(new URL('../server/providers/openai/instructions.js', import.meta.url), 'utf8');