feat(training): Style Studio — upload, rich corpus, lessons, curator portrait, chat

Six-phase upgrade of /training from a read-only dashboard into a full
Style Studio for managing Daphna's style corpus.

- Upload Sheet on /training: file → proofread preview → commit (no more
  CLI-only `upload-training` skill).
- Rich corpus metadata: GET /api/training/corpus returns summary, outcome,
  key_principles, page_count, parties (regex), legal_citation, lessons_count.
  PATCH endpoint for chair edits. CorpusDetailDrawer with 4 tabs (details
  /content/lessons/patterns) replaces the bare table row.
- LLM metadata enrichment: style_metadata_extractor + MCP tools
  (style_corpus_enrich, style_corpus_pending_enrichment) fill summary
  /outcome/key_principles via claude_session (free, host-side).
- Per-decision lessons: new decision_lessons table + 4 REST endpoints +
  LessonsTab in drawer; hermes-curator now auto-posts findings as
  decision_lessons(source=curator).
- Curator Portrait tab: prompt rendered with link to Gitea, recent
  curator findings, style_analyzer training prompts, propose-change
  form that writes proposals to data/curator-proposals/ for manual
  chair review (no auto-mutation of the agent file).
- Style chat tab: SSE-streamed conversations with the style agent.
  New host-side pm2 service (legal-chat-service, port 8770) wraps
  claude CLI with stream-json + --resume continuation; FastAPI proxies
  via host.docker.internal. Zero API cost — uses chaim's claude.ai
  subscription. chat_conversations + chat_messages persist history.

Architecture: keeps the existing rule that claude_session only runs
on the host (not the container). The new legal-chat-service is the
canonical bridge between the container and the local CLI for the chat
feature; everything else (upload, metadata, lessons) stays within the
container's existing capabilities.

Audit script (scripts/audit_training_corpus.py) included for verifying
which corpus rows still need enrichment.

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

web-ui/src/app/training/page.tsx

@@ -1,30 +1,49 @@
 "use client";
 
+import { useState } from "react";
 import Link from "next/link";
+import { Upload } from "lucide-react";
 import { AppShell } from "@/components/app-shell";
+import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
 import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
 import { StyleReportPanel } from "@/components/training/style-report-panel";
 import { CorpusPanel } from "@/components/training/corpus-panel";
 import { ComparePanel } from "@/components/training/compare-panel";
+import { CuratorPortraitPanel } from "@/components/training/curator-portrait-panel";
+import { ChatPanel } from "@/components/training/chat-panel";
+import { TrainingUploadDialog } from "@/components/training/upload-dialog";
 
 export default function TrainingPage() {
+  const [uploadOpen, setUploadOpen] = useState(false);
+
   return (
     <AppShell>
       <section className="space-y-6">
-        <header>
-          <nav className="text-[0.78rem] text-ink-muted mb-1">
-            <Link href="/" className="hover:text-gold-deep">בית</Link>
-            <span aria-hidden> · </span>
-            <span className="text-navy">אימון סגנון</span>
-          </nav>
-          <h1 className="text-navy mb-0">הפורטרט הסגנוני של דפנה</h1>
-          <p className="text-ink-muted text-sm mt-1 max-w-2xl">
-            לוח בקרה של קורפוס האימון — סטטיסטיקות, אנטומיית החלטה ממוצעת,
-            ביטויי חתימה, וכלי השוואה בין שתי החלטות.
-          </p>
+        <header className="flex items-start justify-between gap-4 flex-wrap">
+          <div>
+            <nav className="text-[0.78rem] text-ink-muted mb-1">
+              <Link href="/" className="hover:text-gold-deep">בית</Link>
+              <span aria-hidden> · </span>
+              <span className="text-navy">אימון סגנון</span>
+            </nav>
+            <h1 className="text-navy mb-0">הפורטרט הסגנוני של דפנה</h1>
+            <p className="text-ink-muted text-sm mt-1 max-w-2xl">
+              לוח בקרה של קורפוס האימון — סטטיסטיקות, אנטומיית החלטה ממוצעת,
+              ביטויי חתימה, וכלי השוואה בין שתי החלטות.
+            </p>
+          </div>
+          <Button
+            onClick={() => setUploadOpen(true)}
+            className="bg-navy text-parchment hover:bg-navy-soft shrink-0"
+          >
+            <Upload className="w-4 h-4 me-1" />
+            העלה החלטה
+          </Button>
         </header>
 
+        <TrainingUploadDialog open={uploadOpen} onOpenChange={setUploadOpen} />
+
         <div className="h-[2px] bg-gradient-to-l from-transparent via-gold to-transparent" />
 
         <Card className="bg-surface border-rule shadow-sm">
@@ -34,6 +53,8 @@ export default function TrainingPage() {
                 <TabsTrigger value="report">פורטרט סגנון</TabsTrigger>
                 <TabsTrigger value="corpus">קורפוס</TabsTrigger>
                 <TabsTrigger value="compare">השוואה</TabsTrigger>
+                <TabsTrigger value="curator">הסוכן</TabsTrigger>
+                <TabsTrigger value="chat">שיחה</TabsTrigger>
               </TabsList>
 
               <TabsContent value="report" className="mt-5">
@@ -47,6 +68,14 @@ export default function TrainingPage() {
               <TabsContent value="compare" className="mt-5">
                 <ComparePanel />
               </TabsContent>
+
+              <TabsContent value="curator" className="mt-5">
+                <CuratorPortraitPanel />
+              </TabsContent>
+
+              <TabsContent value="chat" className="mt-5">
+                <ChatPanel />
+              </TabsContent>
             </Tabs>
           </CardContent>
         </Card>