fix(pilot): two Phase 9 layout/state bugs surfaced by QA fixtures

1. EscalateInterceptDialog clipped off-screen.
   The dialog was positioned with `absolute bottom-full mb-2 left-0`
   under the assumption the Escalate button would have room above it.
   In practice the button lives in the chat-page action bar near
   y≈105, so the 302 px dialog overflows the top of the viewport
   and only the last option is visible.

   Switch to `top-full mt-2 right-0` — anchors the dialog below the
   button and aligns its right edge with the button (avoids overflow
   off the right when the button is in the right-side action cluster).

2. TemplateMatchPanel never renders on a fresh session.
   `handleApplyFix` for the script_template_id branch only sets
   `scriptPanelOpen=true`, but TemplateMatchPanel is mounted inside
   `TaskLane.bottomSlot`. On sessions with no questions/facts the
   lane defaults closed, so the panel exists in the React tree but
   inside an unrendered TaskLane — the user clicks Apply fix and
   nothing visibly changes.

   Fix: also `setShowTaskLane(true)` in that branch so the lane
   opens alongside the panel. The ai_drafted_script branch is fine
   (InlineNoTemplateDialog renders in the chat region, not in the
   lane), so it's left alone.

Both bugs were latent — they only surface on sessions that haven't
accumulated TaskLane state yet (questions/facts). Fresh sessions
created from the StartSessionInput hide them because the AI's first
turn populates questions and the lane auto-opens. Caught using the
new seed_phase9_qa_fixtures.py harness.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/src/pages/AssistantChatPage.tsx

@@ -552,7 +552,11 @@ export default function AssistantChatPage() {
   const handleApplyFix = useCallback(() => {
     if (!activeFix) return
     if (activeFix.script_template_id) {
-      setScriptPanelOpen(true) // existing TemplateMatchPanel flow in task lane
+      // TemplateMatchPanel is mounted inside TaskLane.bottomSlot, so the
+      // lane must be visible for the panel to render. On fresh sessions
+      // (no questions/facts) the lane defaults closed, so we open it here.
+      setShowTaskLane(true)
+      setScriptPanelOpen(true)
       return
     }
     if (activeFix.ai_drafted_script) {