emrg: fix rant UX (daemon-authoritative timestamp + GUI dialog textarea + UTF-8 emrgd.log) + locale-safe tests

emrg/gui/main.js

@@ -431,7 +431,9 @@ vision = false
       const frame = await client.sendCommandAndWait("rant", {
         message: message.trim().slice(0, 10000),
         project: String(project || "").trim(),
-        timestamp: new Date().toISOString(),
+        // timestamp deliberately NOT sent: daemon stamps rants with local time
+        // (rant 2026-08-07T13:34Z — GUI previously sent new Date().toISOString(),
+        // which is UTC and 8h behind on UTC+8 hosts)
       }, 5000);
       return { ok: true, count: frame.count ?? 0 };
     });

emrg/gui/renderer/css/components.css

@@ -560,11 +560,20 @@ dialog::backdrop {
   margin-bottom: var(--sp-3);
 }
 .dialog-card label > input,
-.dialog-card label > select {
+.dialog-card label > select,
+.dialog-card label > textarea {
   width: 100%;
   margin-top: var(--sp-1);
   padding: 8px 10px;
 }
+/* rant 2026-08-07T13:32Z: rant dialog textarea was unstyled — default box was
+   tiny. Full width + comfortable min-height + vertical resize + inherited font. */
+.dialog-card label > textarea {
+  min-height: 120px;
+  resize: vertical;
+  font: inherit;
+  line-height: 1.5;
+}
 .dialog-card .hint {
   font-size: var(--fs-aux);
   color: var(--text-3);

emrg/server/__main__.py

@@ -15,7 +15,8 @@
     datefmt="%H:%M:%S",
     handlers=[
         RotatingFileHandler(
-            str(_log_file), maxBytes=10 * 1024 * 1024, backupCount=3
+            str(_log_file), maxBytes=10 * 1024 * 1024, backupCount=3,
+            encoding="utf-8",  # rant 2026-08-07T14:00Z: default locale code page (GBK on zh-CN Windows) mojibakes CJK log lines
         ),
         logging.StreamHandler(),  # also to stderr (visible when run directly)
     ],

emrg/server/daemon.py

@@ -1083,8 +1083,13 @@ async def _process_message(
 
             # Field order: timestamp → project → status → progress → completed → message
             # (project right after timestamp per user feedback; message last)
+            # Timestamp is daemon-authoritative local time (rant 2026-08-07T13:34Z):
+            # clients previously supplied timestamps — GUI sent new Date().toISOString()
+            # (UTC, 8h behind on UTC+8 hosts), TUI sent naive local time. A tz-aware
+            # local ISO timestamp (+08:00) is self-describing, sorts correctly, and is
+            # consistent regardless of which client submitted the rant.
             entry = {
-                "timestamp": msg.get("timestamp", datetime.now().isoformat()),
+                "timestamp": datetime.now().astimezone().isoformat(),
                 "project": project,
                 "status": "pending",
                 "progress": None,

tests/test_config.py

@@ -102,7 +102,7 @@ def test_ensure_config_creates_if_missing(tmp_path, monkeypatch):
     assert not config_file.exists()
     ensure_config()
     assert config_file.exists()
-    content = config_file.read_text()
+    content = config_file.read_text(encoding="utf-8")
     assert "[llm]" in content
     assert "deepseek-chat" in content
 
@@ -114,7 +114,7 @@ def test_ensure_config_noop_when_exists(tmp_path, monkeypatch):
     config_file.write_text("custom")
     monkeypatch.setattr("emrg.config.config_path", lambda: config_file)
     ensure_config()
-    assert config_file.read_text() == "custom"  # unchanged
+    assert config_file.read_text(encoding="utf-8") == "custom"  # unchanged
 
 
 def test_load_config_with_models(tmp_path, monkeypatch):