fix(predictive-echo): anchor hold after unpredicted wire edits (review findings)

Independent post-build review found three gaps, all one family: input that
changes the composer without a prediction leaves the DISPLAYED cursor stale
for one RTT, and anchoring a new run on it painted ghosts one cell off
(blank-neutral, so they lived out the full TTL: "tehh" on
backspace-then-retype, exactly on the links the feature targets).

Fix: the addon now HOLDS new predictions after any such edit (backspace with
nothing outstanding = deleting echoed text, clearPredictions, and now also
IME/plain-paste 'text' commits, which the hook clears like 'clear') until
the next PARSED write releases the hold. The inline predictChar reconcile
deliberately does not count: only the emitter pass or the public
reconcile() is the display-caught-up contract. Worst case is exactly one
unpredicted keystroke, whose own echo releases the hold. Also patched the
one bypass path the PR had missed: _handleCjkInput now clears predictions
like insertTerminalText and the other bypass sends.

Package suite 230, vm gating 85, E2E 10/10 all green after the change.

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

src/web/public/terminal-ui.js

@@ -2563,8 +2563,10 @@ Object.assign(CodemanApp.prototype, {
       const kind = window.CodemanTerminalInput.classifyPredictInput(data);
       if (kind === 'char') this._predictiveEcho.predictChar(data);
       else if (kind === 'backspace') this._predictiveEcho.predictBackspace();
-      else if (kind === 'clear') this._predictiveEcho.clearPredictions();
-      // kind === 'text' (plain multi-char paste): wire only, no visual
+      // 'clear' AND 'text' (plain paste, IME word commits) both change the
+      // composer in ways the display has not shown yet: clear the run and let
+      // the addon's anchor hold suppress prediction until the echo catches up
+      else this._predictiveEcho.clearPredictions();
     } catch {
       /* predictions must never block the wire */
     }
@@ -2577,6 +2579,8 @@ Object.assign(CodemanApp.prototype, {
       _crashDiag.log(`CJK send DROP no-session len=${text.length}`);
       return;
     }
+    // Bypasses onData (like insertTerminalText): predictions cannot see this
+    if (this._localEchoPolicy === 'predict') this._predictiveEcho?.clearPredictions();
     _crashDiag.log(`CJK send→${this.activeSessionId.slice(0, 8)} len=${text.length}`);
     this._sendInputAsync(this.activeSessionId, text);
   },