diff --git a/src/didactopus/api.py b/src/didactopus/api.py
index af50ea7..1798efa 100644
--- a/src/didactopus/api.py
+++ b/src/didactopus/api.py
@@ -4,23 +4,22 @@ from fastapi.middleware.cors import CORSMiddleware
 import uvicorn
 from .db import Base, engine
 from .models import (
-    LoginRequest, TokenPair, KnowledgeCandidateCreate,
+    LoginRequest, TokenPair, KnowledgeCandidateCreate, KnowledgeCandidateUpdate,
     ReviewCreate, PromoteRequest, SynthesisRunRequest, SynthesisPromoteRequest,
     CreateLearnerRequest
 )
 from .repository import (
-    authenticate_user, get_user_by_id, create_learner,
-    create_candidate, list_candidates, get_candidate,
+    authenticate_user, get_user_by_id, create_learner, learner_owned_by_user,
+    create_candidate, list_candidates, get_candidate, update_candidate,
     create_review, list_reviews, create_promotion, list_promotions,
-    list_synthesis_candidates, get_synthesis_candidate,
-    list_pack_patches, list_curriculum_drafts, list_skill_bundles
+    list_synthesis_candidates, get_synthesis_candidate
 )
 from .auth import issue_access_token, issue_refresh_token, decode_token, new_token_id
 from .synthesis import generate_synthesis_candidates
 
 Base.metadata.create_all(bind=engine)
 
-app = FastAPI(title="Didactopus Promotion Target Objects API")
+app = FastAPI(title="Didactopus Review Workbench API")
 app.add_middleware(CORSMiddleware, allow_origins=["*"], allow_credentials=True, allow_methods=["*"], allow_headers=["*"])
 
 _refresh_tokens = {}
@@ -75,6 +74,13 @@ def api_get_candidate(candidate_id: int, reviewer = Depends(require_reviewer)):
         raise HTTPException(status_code=404, detail="Candidate not found")
     return row
 
+@app.post("/api/knowledge-candidates/{candidate_id}/update")
+def api_update_candidate(candidate_id: int, payload: KnowledgeCandidateUpdate, reviewer = Depends(require_reviewer)):
+    row = update_candidate(candidate_id, triage_lane=payload.triage_lane, current_status=payload.current_status)
+    if row is None:
+        raise HTTPException(status_code=404, detail="Candidate not found")
+    return {"candidate_id": row.id, "triage_lane": row.triage_lane, "current_status": row.current_status}
+
 @app.post("/api/knowledge-candidates/{candidate_id}/reviews")
 def api_create_review(candidate_id: int, payload: ReviewCreate, reviewer = Depends(require_reviewer)):
     if get_candidate(candidate_id) is None:
@@ -97,18 +103,6 @@ def api_promote_candidate(candidate_id: int, payload: PromoteRequest, reviewer =
 def api_list_promotions(reviewer = Depends(require_reviewer)):
     return list_promotions()
 
-@app.get("/api/pack-patches")
-def api_list_pack_patches(reviewer = Depends(require_reviewer)):
-    return list_pack_patches()
-
-@app.get("/api/curriculum-drafts")
-def api_list_curriculum_drafts(reviewer = Depends(require_reviewer)):
-    return list_curriculum_drafts()
-
-@app.get("/api/skill-bundles")
-def api_list_skill_bundles(reviewer = Depends(require_reviewer)):
-    return list_skill_bundles()
-
 @app.post("/api/synthesis/run")
 def api_run_synthesis(payload: SynthesisRunRequest, reviewer = Depends(require_reviewer)):
     created = generate_synthesis_candidates(payload.source_pack_id, payload.target_pack_id, payload.limit)
diff --git a/src/didactopus/models.py b/src/didactopus/models.py
index 086c82f..16f12be 100644
--- a/src/didactopus/models.py
+++ b/src/didactopus/models.py
@@ -27,6 +27,10 @@ class KnowledgeCandidateCreate(BaseModel):
     synthesis_score: float = 0.0
     triage_lane: str = "archive"
 
+class KnowledgeCandidateUpdate(BaseModel):
+    triage_lane: str | None = None
+    current_status: str | None = None
+
 class ReviewCreate(BaseModel):
     review_kind: str = "human_review"
     verdict: str
@@ -49,3 +53,15 @@ class SynthesisPromoteRequest(BaseModel):
 class CreateLearnerRequest(BaseModel):
     learner_id: str
     display_name: str = ""
+
+class MasteryRecord(BaseModel):
+    concept_id: str
+    dimension: str
+    score: float = 0.0
+    confidence: float = 0.0
+    evidence_count: int = 0
+    last_updated: str = ""
+
+class LearnerState(BaseModel):
+    learner_id: str
+    records: list[MasteryRecord] = Field(default_factory=list)
diff --git a/src/didactopus/orm.py b/src/didactopus/orm.py
index 3fff9bd..668611f 100644
--- a/src/didactopus/orm.py
+++ b/src/didactopus/orm.py
@@ -21,6 +21,23 @@ class PackORM(Base):
     data_json: Mapped[str] = mapped_column(Text)
     is_published: Mapped[bool] = mapped_column(Boolean, default=False)
 
+class LearnerORM(Base):
+    __tablename__ = "learners"
+    id: Mapped[str] = mapped_column(String(100), primary_key=True)
+    owner_user_id: Mapped[int] = mapped_column(ForeignKey("users.id"), index=True)
+    display_name: Mapped[str] = mapped_column(String(255), default="")
+
+class MasteryRecordORM(Base):
+    __tablename__ = "mastery_records"
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    learner_id: Mapped[str] = mapped_column(ForeignKey("learners.id"), index=True)
+    concept_id: Mapped[str] = mapped_column(String(100), index=True)
+    dimension: Mapped[str] = mapped_column(String(100), default="mastery")
+    score: Mapped[float] = mapped_column(Float, default=0.0)
+    confidence: Mapped[float] = mapped_column(Float, default=0.0)
+    evidence_count: Mapped[int] = mapped_column(Integer, default=0)
+    last_updated: Mapped[str] = mapped_column(String(100), default="")
+
 class KnowledgeCandidateORM(Base):
     __tablename__ = "knowledge_candidates"
     id: Mapped[int] = mapped_column(Integer, primary_key=True)
@@ -78,43 +95,3 @@ class SynthesisCandidateORM(Base):
     evidence_json: Mapped[str] = mapped_column(Text, default="{}")
     current_status: Mapped[str] = mapped_column(String(50), default="proposed")
     created_at: Mapped[str] = mapped_column(String(100), default="")
-
-class PackPatchProposalORM(Base):
-    __tablename__ = "pack_patch_proposals"
-    id: Mapped[int] = mapped_column(Integer, primary_key=True)
-    candidate_id: Mapped[int] = mapped_column(ForeignKey("knowledge_candidates.id"), index=True)
-    pack_id: Mapped[str] = mapped_column(String(100), index=True)
-    patch_type: Mapped[str] = mapped_column(String(100), default="content_revision")
-    title: Mapped[str] = mapped_column(String(255))
-    proposed_change_json: Mapped[str] = mapped_column(Text, default="{}")
-    evidence_summary: Mapped[str] = mapped_column(Text, default="")
-    reviewer_notes: Mapped[str] = mapped_column(Text, default="")
-    status: Mapped[str] = mapped_column(String(50), default="proposed")
-    created_at: Mapped[str] = mapped_column(String(100), default="")
-
-class CurriculumDraftORM(Base):
-    __tablename__ = "curriculum_drafts"
-    id: Mapped[int] = mapped_column(Integer, primary_key=True)
-    candidate_id: Mapped[int] = mapped_column(ForeignKey("knowledge_candidates.id"), index=True)
-    topic_focus: Mapped[str] = mapped_column(String(255), default="")
-    product_type: Mapped[str] = mapped_column(String(100), default="lesson_outline")
-    audience: Mapped[str] = mapped_column(String(100), default="general")
-    source_concepts_json: Mapped[str] = mapped_column(Text, default="[]")
-    content_markdown: Mapped[str] = mapped_column(Text, default="")
-    editorial_notes: Mapped[str] = mapped_column(Text, default="")
-    status: Mapped[str] = mapped_column(String(50), default="draft")
-    created_at: Mapped[str] = mapped_column(String(100), default="")
-
-class SkillBundleORM(Base):
-    __tablename__ = "skill_bundles"
-    id: Mapped[int] = mapped_column(Integer, primary_key=True)
-    candidate_id: Mapped[int] = mapped_column(ForeignKey("knowledge_candidates.id"), index=True)
-    skill_name: Mapped[str] = mapped_column(String(255))
-    domain: Mapped[str] = mapped_column(String(100), default="")
-    prerequisites_json: Mapped[str] = mapped_column(Text, default="[]")
-    expected_inputs_json: Mapped[str] = mapped_column(Text, default="[]")
-    failure_modes_json: Mapped[str] = mapped_column(Text, default="[]")
-    validation_checks_json: Mapped[str] = mapped_column(Text, default="[]")
-    canonical_examples_json: Mapped[str] = mapped_column(Text, default="[]")
-    status: Mapped[str] = mapped_column(String(50), default="draft")
-    created_at: Mapped[str] = mapped_column(String(100), default="")
diff --git a/src/didactopus/repository.py b/src/didactopus/repository.py
index e4ca877..c1f454b 100644
--- a/src/didactopus/repository.py
+++ b/src/didactopus/repository.py
@@ -4,9 +4,8 @@ from datetime import datetime, timezone
 from sqlalchemy import select
 from .db import SessionLocal
 from .orm import (
-    UserORM, PackORM, LearnerORM,
-    KnowledgeCandidateORM, ReviewRecordORM, PromotionRecordORM, SynthesisCandidateORM,
-    PackPatchProposalORM, CurriculumDraftORM, SkillBundleORM
+    UserORM, PackORM, LearnerORM, MasteryRecordORM,
+    KnowledgeCandidateORM, ReviewRecordORM, PromotionRecordORM, SynthesisCandidateORM
 )
 from .auth import verify_password
 
@@ -31,12 +30,33 @@ def list_packs():
     with SessionLocal() as db:
         return db.execute(select(PackORM).order_by(PackORM.id)).scalars().all()
 
+def get_pack(pack_id: str):
+    with SessionLocal() as db:
+        return db.get(PackORM, pack_id)
+
 def create_learner(owner_user_id: int, learner_id: str, display_name: str = ""):
     with SessionLocal() as db:
         if db.get(LearnerORM, learner_id) is None:
             db.add(LearnerORM(id=learner_id, owner_user_id=owner_user_id, display_name=display_name))
             db.commit()
 
+def learner_owned_by_user(user_id: int, learner_id: str) -> bool:
+    with SessionLocal() as db:
+        learner = db.get(LearnerORM, learner_id)
+        return learner is not None and learner.owner_user_id == user_id
+
+def list_mastery_records(learner_id: str):
+    with SessionLocal() as db:
+        rows = db.execute(select(MasteryRecordORM).where(MasteryRecordORM.learner_id == learner_id)).scalars().all()
+        return [{
+            "concept_id": r.concept_id,
+            "dimension": r.dimension,
+            "score": r.score,
+            "confidence": r.confidence,
+            "evidence_count": r.evidence_count,
+            "last_updated": r.last_updated,
+        } for r in rows]
+
 def create_candidate(payload):
     with SessionLocal() as db:
         row = KnowledgeCandidateORM(
@@ -64,26 +84,24 @@ def create_candidate(payload):
 def list_candidates():
     with SessionLocal() as db:
         rows = db.execute(select(KnowledgeCandidateORM).order_by(KnowledgeCandidateORM.id.desc())).scalars().all()
-        out = []
-        for r in rows:
-            out.append({
-                "candidate_id": r.id,
-                "source_type": r.source_type,
-                "learner_id": r.learner_id,
-                "pack_id": r.pack_id,
-                "candidate_kind": r.candidate_kind,
-                "title": r.title,
-                "summary": r.summary,
-                "structured_payload": json.loads(r.structured_payload_json or "{}"),
-                "evidence_summary": r.evidence_summary,
-                "confidence_hint": r.confidence_hint,
-                "novelty_score": r.novelty_score,
-                "synthesis_score": r.synthesis_score,
-                "triage_lane": r.triage_lane,
-                "current_status": r.current_status,
-                "created_at": r.created_at,
-            })
-        return out
+        return [{
+            "candidate_id": r.id,
+            "source_type": r.source_type,
+            "source_artifact_id": r.source_artifact_id,
+            "learner_id": r.learner_id,
+            "pack_id": r.pack_id,
+            "candidate_kind": r.candidate_kind,
+            "title": r.title,
+            "summary": r.summary,
+            "structured_payload": json.loads(r.structured_payload_json or "{}"),
+            "evidence_summary": r.evidence_summary,
+            "confidence_hint": r.confidence_hint,
+            "novelty_score": r.novelty_score,
+            "synthesis_score": r.synthesis_score,
+            "triage_lane": r.triage_lane,
+            "current_status": r.current_status,
+            "created_at": r.created_at,
+        } for r in rows]
 
 def get_candidate(candidate_id: int):
     with SessionLocal() as db:
@@ -93,6 +111,7 @@ def get_candidate(candidate_id: int):
         return {
             "candidate_id": r.id,
             "source_type": r.source_type,
+            "source_artifact_id": r.source_artifact_id,
             "learner_id": r.learner_id,
             "pack_id": r.pack_id,
             "candidate_kind": r.candidate_kind,
@@ -108,6 +127,19 @@ def get_candidate(candidate_id: int):
             "created_at": r.created_at,
         }
 
+def update_candidate(candidate_id: int, triage_lane=None, current_status=None):
+    with SessionLocal() as db:
+        row = db.get(KnowledgeCandidateORM, candidate_id)
+        if row is None:
+            return None
+        if triage_lane is not None:
+            row.triage_lane = triage_lane
+        if current_status is not None:
+            row.current_status = current_status
+        db.commit()
+        db.refresh(row)
+        return row
+
 def create_review(candidate_id: int, reviewer_id: int, payload):
     with SessionLocal() as db:
         row = ReviewRecordORM(
@@ -138,93 +170,21 @@ def list_reviews(candidate_id: int):
             "created_at": r.created_at,
         } for r in rows]
 
-def create_pack_patch(candidate, reviewer_notes: str = ""):
-    with SessionLocal() as db:
-        row = PackPatchProposalORM(
-            candidate_id=candidate["candidate_id"],
-            pack_id=candidate["pack_id"],
-            patch_type=candidate["candidate_kind"],
-            title=candidate["title"],
-            proposed_change_json=json.dumps(candidate["structured_payload"]),
-            evidence_summary=candidate["evidence_summary"],
-            reviewer_notes=reviewer_notes,
-            status="proposed",
-            created_at=now_iso(),
-        )
-        db.add(row)
-        db.commit()
-        db.refresh(row)
-        return f"patch:{row.id}"
-
-def create_curriculum_draft(candidate, reviewer_notes: str = ""):
-    with SessionLocal() as db:
-        payload = candidate["structured_payload"]
-        source_concepts = payload.get("source_concepts", [payload.get("affected_concept")] if payload.get("affected_concept") else [])
-        content = f"# {candidate['title']}\n\n{candidate['summary']}\n\n## Evidence\n{candidate['evidence_summary']}\n"
-        row = CurriculumDraftORM(
-            candidate_id=candidate["candidate_id"],
-            topic_focus=candidate["title"],
-            product_type="lesson_outline",
-            audience="general",
-            source_concepts_json=json.dumps(source_concepts),
-            content_markdown=content,
-            editorial_notes=reviewer_notes,
-            status="draft",
-            created_at=now_iso(),
-        )
-        db.add(row)
-        db.commit()
-        db.refresh(row)
-        return f"curriculum:{row.id}"
-
-def create_skill_bundle(candidate, reviewer_notes: str = ""):
-    with SessionLocal() as db:
-        payload = candidate["structured_payload"]
-        row = SkillBundleORM(
-            candidate_id=candidate["candidate_id"],
-            skill_name=candidate["title"],
-            domain=candidate["pack_id"],
-            prerequisites_json=json.dumps(payload.get("prerequisites", [])),
-            expected_inputs_json=json.dumps(payload.get("expected_inputs", ["text"])),
-            failure_modes_json=json.dumps(payload.get("failure_modes", ["misapplied concept"])),
-            validation_checks_json=json.dumps(payload.get("validation_checks", ["can explain concept clearly"])),
-            canonical_examples_json=json.dumps(payload.get("canonical_examples", [candidate["summary"]])),
-            status="draft",
-            created_at=now_iso(),
-        )
-        db.add(row)
-        db.commit()
-        db.refresh(row)
-        return f"skill:{row.id}"
-
 def create_promotion(candidate_id: int, promoted_by: int, payload):
-    candidate = get_candidate(candidate_id)
-    if candidate is None:
-        return None
-    target_object_id = payload.target_object_id
-    if not target_object_id:
-        if payload.promotion_target == "pack_improvement":
-            target_object_id = create_pack_patch(candidate)
-        elif payload.promotion_target == "curriculum_draft":
-            target_object_id = create_curriculum_draft(candidate)
-        elif payload.promotion_target == "reusable_skill_bundle":
-            target_object_id = create_skill_bundle(candidate)
-        elif payload.promotion_target == "archive":
-            target_object_id = "archive:auto"
     with SessionLocal() as db:
         row = PromotionRecordORM(
             candidate_id=candidate_id,
             promotion_target=payload.promotion_target,
-            target_object_id=target_object_id,
+            target_object_id=payload.target_object_id,
             promotion_status=payload.promotion_status,
             promoted_by=promoted_by,
             created_at=now_iso(),
         )
         db.add(row)
-        cand = db.get(KnowledgeCandidateORM, candidate_id)
-        if cand:
-            cand.current_status = "promoted" if payload.promotion_target != "archive" else "archived"
-            cand.triage_lane = payload.promotion_target
+        candidate = db.get(KnowledgeCandidateORM, candidate_id)
+        if candidate:
+            candidate.current_status = "promoted"
+            candidate.triage_lane = payload.promotion_target
         db.commit()
         db.refresh(row)
         return row.id
@@ -242,55 +202,6 @@ def list_promotions():
             "created_at": r.created_at,
         } for r in rows]
 
-def list_pack_patches():
-    with SessionLocal() as db:
-        rows = db.execute(select(PackPatchProposalORM).order_by(PackPatchProposalORM.id.desc())).scalars().all()
-        return [{
-            "patch_id": r.id,
-            "candidate_id": r.candidate_id,
-            "pack_id": r.pack_id,
-            "patch_type": r.patch_type,
-            "title": r.title,
-            "proposed_change": json.loads(r.proposed_change_json or "{}"),
-            "evidence_summary": r.evidence_summary,
-            "reviewer_notes": r.reviewer_notes,
-            "status": r.status,
-            "created_at": r.created_at,
-        } for r in rows]
-
-def list_curriculum_drafts():
-    with SessionLocal() as db:
-        rows = db.execute(select(CurriculumDraftORM).order_by(CurriculumDraftORM.id.desc())).scalars().all()
-        return [{
-            "draft_id": r.id,
-            "candidate_id": r.candidate_id,
-            "topic_focus": r.topic_focus,
-            "product_type": r.product_type,
-            "audience": r.audience,
-            "source_concepts": json.loads(r.source_concepts_json or "[]"),
-            "content_markdown": r.content_markdown,
-            "editorial_notes": r.editorial_notes,
-            "status": r.status,
-            "created_at": r.created_at,
-        } for r in rows]
-
-def list_skill_bundles():
-    with SessionLocal() as db:
-        rows = db.execute(select(SkillBundleORM).order_by(SkillBundleORM.id.desc())).scalars().all()
-        return [{
-            "skill_bundle_id": r.id,
-            "candidate_id": r.candidate_id,
-            "skill_name": r.skill_name,
-            "domain": r.domain,
-            "prerequisites": json.loads(r.prerequisites_json or "[]"),
-            "expected_inputs": json.loads(r.expected_inputs_json or "[]"),
-            "failure_modes": json.loads(r.failure_modes_json or "[]"),
-            "validation_checks": json.loads(r.validation_checks_json or "[]"),
-            "canonical_examples": json.loads(r.canonical_examples_json or "[]"),
-            "status": r.status,
-            "created_at": r.created_at,
-        } for r in rows]
-
 def create_synthesis_candidate(
     source_concept_id: str,
     target_concept_id: str,
diff --git a/src/didactopus/synthesis.py b/src/didactopus/synthesis.py
index 2e12151..a980f75 100644
--- a/src/didactopus/synthesis.py
+++ b/src/didactopus/synthesis.py
@@ -32,6 +32,7 @@ def generate_synthesis_candidates(source_pack_id: str | None = None, target_pack
     by_id = {p.id: p for p in packs}
     source_packs = [by_id[source_pack_id]] if source_pack_id and source_pack_id in by_id else packs
     target_packs = [by_id[target_pack_id]] if target_pack_id and target_pack_id in by_id else packs
+
     created = []
     seen = set()
     for sp in source_packs:
@@ -48,6 +49,7 @@ def generate_synthesis_candidates(source_pack_id: str | None = None, target_pack
                     total = 0.35 * sem + 0.25 * struct + 0.20 * traj + 0.10 * review_prior + 0.10 * novelty
                     if total < 0.45:
                         continue
+                    explanation = f"Possible cross-pack overlap between '{ca.get('title')}' and '{cb.get('title')}'."
                     sid = create_synthesis_candidate(
                         source_concept_id=ca.get("id", ""),
                         target_concept_id=cb.get("id", ""),
@@ -58,7 +60,7 @@ def generate_synthesis_candidates(source_pack_id: str | None = None, target_pack
                         score_structural=struct,
                         score_trajectory=traj,
                         score_review_history=review_prior,
-                        explanation=f"Possible cross-pack overlap between '{ca.get('title')}' and '{cb.get('title')}'.",
+                        explanation=explanation,
                         evidence={"novelty": novelty, "source_title": ca.get("title"), "target_title": cb.get("title")},
                     )
                     seen.add((ca.get("id"), cb.get("id")))
diff --git a/webui/index.html b/webui/index.html
index 0bbd41c..0bdfcfa 100644
--- a/webui/index.html
+++ b/webui/index.html
@@ -3,7 +3,7 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Didactopus Promotion Target Objects</title>
+    <title>Didactopus Review Workbench</title>
     <script type="module" src="/src/main.jsx"></script>
   </head>
   <body><div id="root"></div></body>
diff --git a/webui/package.json b/webui/package.json
index 92a1964..c562f41 100644
--- a/webui/package.json
+++ b/webui/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "didactopus-promotion-target-objects-ui",
+  "name": "didactopus-review-workbench-ui",
   "private": true,
   "version": "0.1.0",
   "type": "module",
diff --git a/webui/src/App.jsx b/webui/src/App.jsx
index ff3038f..2ac4da7 100644
--- a/webui/src/App.jsx
+++ b/webui/src/App.jsx
@@ -1,111 +1,130 @@
 import React, { useEffect, useState } from "react";
-import { login, listCandidates, createCandidate, promoteCandidate, runSynthesis, listSynthesisCandidates, promoteSynthesis, listPackPatches, listCurriculumDrafts, listSkillBundles } from "./api";
+import { login, listCandidates, createCandidate, createReview, promoteCandidate, runSynthesis, listSynthesisCandidates, promoteSynthesis } from "./api";
 
 function LoginView({ onAuth }) {
   const [username, setUsername] = useState("reviewer");
   const [password, setPassword] = useState("demo-pass");
   const [error, setError] = useState("");
   async function doLogin() {
-    try { onAuth(await login(username, password)); }
-    catch { setError("Login failed"); }
+    try {
+      const result = await login(username, password);
+      onAuth(result);
+    } catch {
+      setError("Login failed");
+    }
   }
   return (
-    <div className="page narrow"><section className="card">
-      <h1>Didactopus promotion targets</h1>
-      <label>Username<input value={username} onChange={(e)=>setUsername(e.target.value)} /></label>
-      <label>Password<input type="password" value={password} onChange={(e)=>setPassword(e.target.value)} /></label>
-      <button className="primary" onClick={doLogin}>Login</button>
-      {error ? <div className="error">{error}</div> : null}
-    </section></div>
+    <div className="page narrow">
+      <section className="card">
+        <h1>Didactopus review workbench</h1>
+        <label>Username<input value={username} onChange={(e) => setUsername(e.target.value)} /></label>
+        <label>Password<input type="password" value={password} onChange={(e) => setPassword(e.target.value)} /></label>
+        <button className="primary" onClick={doLogin}>Login</button>
+        {error ? <div className="error">{error}</div> : null}
+      </section>
+    </div>
   );
 }
 
-function CandidateCard({ candidate, onPromote }) {
+function CandidateCard({ candidate, onReview, onPromote }) {
   return (
     <div className="card small">
       <h3>{candidate.title}</h3>
-      <div className="muted">{candidate.candidate_kind} · {candidate.triage_lane}</div>
+      <div className="muted">{candidate.candidate_kind} · lane: {candidate.triage_lane} · status: {candidate.current_status}</div>
       <p>{candidate.summary}</p>
+      <div className="tiny">confidence {candidate.confidence_hint.toFixed(2)} · novelty {candidate.novelty_score.toFixed(2)} · synthesis {candidate.synthesis_score.toFixed(2)}</div>
       <div className="actions">
-        <button onClick={() => onPromote(candidate.candidate_id, "pack_improvement")}>Make patch proposal</button>
-        <button onClick={() => onPromote(candidate.candidate_id, "curriculum_draft")}>Make curriculum draft</button>
-        <button onClick={() => onPromote(candidate.candidate_id, "reusable_skill_bundle")}>Make skill bundle</button>
+        <button onClick={() => onReview(candidate.candidate_id, "accept_pack_improvement")}>Accept as pack improvement</button>
+        <button onClick={() => onPromote(candidate.candidate_id, "curriculum_draft")}>Promote to curriculum draft</button>
+        <button onClick={() => onPromote(candidate.candidate_id, "reusable_skill_bundle")}>Promote to skill bundle</button>
         <button onClick={() => onPromote(candidate.candidate_id, "archive")}>Archive</button>
       </div>
     </div>
   );
 }
 
+function SynthesisCard({ item, onPromote }) {
+  return (
+    <div className="card small">
+      <h3>{item.source_concept_id} ↔ {item.target_concept_id}</h3>
+      <div className="muted">{item.source_pack_id} → {item.target_pack_id}</div>
+      <p>{item.explanation}</p>
+      <div className="tiny">total {item.score_total.toFixed(2)} · semantic {item.score_semantic.toFixed(2)} · structural {item.score_structural.toFixed(2)}</div>
+      <button onClick={() => onPromote(item.synthesis_id)}>Promote into workflow</button>
+    </div>
+  );
+}
+
 export default function App() {
   const [auth, setAuth] = useState(null);
   const [candidates, setCandidates] = useState([]);
   const [synthesis, setSynthesis] = useState([]);
-  const [patches, setPatches] = useState([]);
-  const [curriculum, setCurriculum] = useState([]);
-  const [skills, setSkills] = useState([]);
   const [message, setMessage] = useState("");
 
   async function reload(token = auth?.access_token) {
     if (!token) return;
-    const [c, s, p, d, k] = await Promise.all([
-      listCandidates(token),
-      listSynthesisCandidates(token),
-      listPackPatches(token),
-      listCurriculumDrafts(token),
-      listSkillBundles(token),
-    ]);
-    setCandidates(c);
-    setSynthesis(s);
-    setPatches(p);
-    setCurriculum(d);
-    setSkills(k);
+    setCandidates(await listCandidates(token));
+    setSynthesis(await listSynthesisCandidates(token));
   }
 
-  useEffect(() => { if (auth?.access_token) reload(auth.access_token); }, [auth]);
+  useEffect(() => {
+    if (auth?.access_token) {
+      reload(auth.access_token);
+    }
+  }, [auth]);
 
   async function seedCandidate() {
-    await createCandidate(auth.access_token, {
+    const payload = {
       source_type: "learner_export",
+      source_artifact_id: null,
       learner_id: "wesley-learner",
       pack_id: "biology-pack",
       candidate_kind: "hidden_prerequisite",
-      title: "Probability intuition before drift",
-      summary: "Learner evidence suggests drift is easier after explicit random-process intuition.",
-      structured_payload: {
-        affected_concept: "drift",
-        prerequisites: ["variation", "random_walk"],
-        source_concepts: ["drift", "variation"],
-        expected_inputs: ["short explanation", "worked example"],
-        failure_modes: ["treating drift as directional"],
-        validation_checks: ["explains stochastic change"],
-        canonical_examples: ["coin flip population drift example"]
-      },
-      evidence_summary: "Repeated learner confusion with stochastic interpretation.",
-      confidence_hint: 0.78,
-      novelty_score: 0.69,
-      synthesis_score: 0.55,
+      title: "Possible hidden prerequisite for drift",
+      summary: "Learner evidence suggests probability intuition should be explicit before drift.",
+      structured_payload: { affected_concept: "drift", suggested_prereq: "variation" },
+      evidence_summary: "Repeated confusion on stochastic interpretation.",
+      confidence_hint: 0.73,
+      novelty_score: 0.66,
+      synthesis_score: 0.42,
       triage_lane: "pack_improvement"
-    });
+    };
+    await createCandidate(auth.access_token, payload);
     await reload();
     setMessage("Seed candidate created.");
   }
 
-  async function doPromote(candidateId, target) {
-    await promoteCandidate(auth.access_token, candidateId, { promotion_target: target, target_object_id: "", promotion_status: "approved" });
+  async function handleReview(candidateId, verdict) {
+    await createReview(auth.access_token, candidateId, {
+      review_kind: "human_review",
+      verdict,
+      rationale: "Accepted in reviewer workbench demo.",
+      requested_changes: ""
+    });
+    await reload();
+    setMessage(`Review added to candidate ${candidateId}.`);
+  }
+
+  async function handlePromote(candidateId, target) {
+    await promoteCandidate(auth.access_token, candidateId, {
+      promotion_target: target,
+      target_object_id: "",
+      promotion_status: "approved"
+    });
     await reload();
     setMessage(`Candidate ${candidateId} promoted to ${target}.`);
   }
 
-  async function doSynthesis() {
-    await runSynthesis(auth.access_token, { source_pack_id: "biology-pack", target_pack_id: "math-pack", limit: 10 });
+  async function handleRunSynthesis() {
+    await runSynthesis(auth.access_token, { source_pack_id: "biology-pack", target_pack_id: "math-pack", limit: 12 });
     await reload();
     setMessage("Synthesis run completed.");
   }
 
-  async function doPromoteSynthesis(synthesisId) {
+  async function handlePromoteSynthesis(synthesisId) {
     await promoteSynthesis(auth.access_token, synthesisId, { promotion_target: "pack_improvement" });
     await reload();
-    setMessage(`Synthesis ${synthesisId} promoted.`);
+    setMessage(`Synthesis candidate ${synthesisId} promoted into workflow.`);
   }
 
   if (!auth) return <LoginView onAuth={setAuth} />;
@@ -114,43 +133,32 @@ export default function App() {
     <div className="page">
       <header className="hero">
         <div>
-          <h1>Promotion target objects</h1>
-          <p>Materialize promotions into patch proposals, curriculum drafts, and reusable skill bundles.</p>
+          <h1>Review workbench + synthesis engine</h1>
+          <p>Triages learner-derived knowledge into pack improvements, curriculum drafts, skill bundles, or archive, while surfacing cross-pack synthesis proposals.</p>
           <div className="muted">{message}</div>
         </div>
         <div className="toolbar">
           <button onClick={seedCandidate}>Seed candidate</button>
-          <button onClick={doSynthesis}>Run synthesis</button>
+          <button onClick={handleRunSynthesis}>Run synthesis</button>
           <button onClick={() => reload()}>Refresh</button>
         </div>
       </header>
 
-      <main className="grid3">
+      <main className="grid">
         <section>
-          <h2>Candidates</h2>
+          <h2>Knowledge candidates</h2>
           <div className="stack">
-            {candidates.map(c => <CandidateCard key={c.candidate_id} candidate={c} onPromote={doPromote} />)}
-          </div>
-        </section>
-        <section>
-          <h2>Synthesis</h2>
-          <div className="stack">
-            {synthesis.map(s => (
-              <div className="card small" key={s.synthesis_id}>
-                <h3>{s.source_concept_id} ↔ {s.target_concept_id}</h3>
-                <div className="muted">{s.source_pack_id} → {s.target_pack_id}</div>
-                <p>{s.explanation}</p>
-                <button onClick={() => doPromoteSynthesis(s.synthesis_id)}>Promote synthesis</button>
-              </div>
+            {candidates.map((c) => (
+              <CandidateCard key={c.candidate_id} candidate={c} onReview={handleReview} onPromote={handlePromote} />
             ))}
           </div>
         </section>
         <section>
-          <h2>Materialized outputs</h2>
+          <h2>Synthesis candidates</h2>
           <div className="stack">
-            <div className="card small"><h3>Pack patches</h3><pre>{JSON.stringify(patches, null, 2)}</pre></div>
-            <div className="card small"><h3>Curriculum drafts</h3><pre>{JSON.stringify(curriculum, null, 2)}</pre></div>
-            <div className="card small"><h3>Skill bundles</h3><pre>{JSON.stringify(skills, null, 2)}</pre></div>
+            {synthesis.map((s) => (
+              <SynthesisCard key={s.synthesis_id} item={s} onPromote={handlePromoteSynthesis} />
+            ))}
           </div>
         </section>
       </main>
diff --git a/webui/src/api.js b/webui/src/api.js
index a9234d8..4d35df8 100644
--- a/webui/src/api.js
+++ b/webui/src/api.js
@@ -11,48 +11,45 @@ export async function login(username, password) {
   if (!res.ok) throw new Error("login failed");
   return await res.json();
 }
+
 export async function listCandidates(token) {
   const res = await fetch(`${API}/knowledge-candidates`, { headers: authHeaders(token, false) });
   if (!res.ok) throw new Error("listCandidates failed");
   return await res.json();
 }
+
 export async function createCandidate(token, payload) {
   const res = await fetch(`${API}/knowledge-candidates`, { method: "POST", headers: authHeaders(token), body: JSON.stringify(payload) });
   if (!res.ok) throw new Error("createCandidate failed");
   return await res.json();
 }
+
+export async function createReview(token, candidateId, payload) {
+  const res = await fetch(`${API}/knowledge-candidates/${candidateId}/reviews`, { method: "POST", headers: authHeaders(token), body: JSON.stringify(payload) });
+  if (!res.ok) throw new Error("createReview failed");
+  return await res.json();
+}
+
 export async function promoteCandidate(token, candidateId, payload) {
   const res = await fetch(`${API}/knowledge-candidates/${candidateId}/promote`, { method: "POST", headers: authHeaders(token), body: JSON.stringify(payload) });
   if (!res.ok) throw new Error("promoteCandidate failed");
   return await res.json();
 }
+
 export async function runSynthesis(token, payload) {
   const res = await fetch(`${API}/synthesis/run`, { method: "POST", headers: authHeaders(token), body: JSON.stringify(payload) });
   if (!res.ok) throw new Error("runSynthesis failed");
   return await res.json();
 }
+
 export async function listSynthesisCandidates(token) {
   const res = await fetch(`${API}/synthesis/candidates`, { headers: authHeaders(token, false) });
   if (!res.ok) throw new Error("listSynthesisCandidates failed");
   return await res.json();
 }
+
 export async function promoteSynthesis(token, synthesisId, payload) {
   const res = await fetch(`${API}/synthesis/candidates/${synthesisId}/promote`, { method: "POST", headers: authHeaders(token), body: JSON.stringify(payload) });
   if (!res.ok) throw new Error("promoteSynthesis failed");
   return await res.json();
 }
-export async function listPackPatches(token) {
-  const res = await fetch(`${API}/pack-patches`, { headers: authHeaders(token, false) });
-  if (!res.ok) throw new Error("listPackPatches failed");
-  return await res.json();
-}
-export async function listCurriculumDrafts(token) {
-  const res = await fetch(`${API}/curriculum-drafts`, { headers: authHeaders(token, false) });
-  if (!res.ok) throw new Error("listCurriculumDrafts failed");
-  return await res.json();
-}
-export async function listSkillBundles(token) {
-  const res = await fetch(`${API}/skill-bundles`, { headers: authHeaders(token, false) });
-  if (!res.ok) throw new Error("listSkillBundles failed");
-  return await res.json();
-}
diff --git a/webui/src/styles.css b/webui/src/styles.css
index 6b186a6..dea47f1 100644
--- a/webui/src/styles.css
+++ b/webui/src/styles.css
@@ -3,11 +3,11 @@
 }
 * { box-sizing:border-box; }
 body { margin:0; background:var(--bg); color:var(--text); font-family:Arial, Helvetica, sans-serif; }
-.page { max-width:1600px; margin:0 auto; padding:24px; }
+.page { max-width:1500px; margin:0 auto; padding:24px; }
 .narrow { max-width:520px; }
 .hero, .card { background:var(--card); border:1px solid var(--border); border-radius:18px; padding:18px; }
 .hero { display:flex; justify-content:space-between; gap:16px; margin-bottom:18px; }
-.grid3 { display:grid; grid-template-columns:1.1fr 1fr 1.2fr; gap:18px; }
+.grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
 .stack { display:grid; gap:14px; }
 .card.small h3 { margin-top:0; }
 label { display:block; font-weight:600; margin-bottom:10px; }
@@ -17,9 +17,9 @@ button.primary { background:var(--accent); color:white; border-color:var(--accen
 .actions { display:flex; flex-wrap:wrap; gap:8px; }
 .toolbar { display:flex; gap:8px; align-items:flex-start; flex-wrap:wrap; }
 .muted { color:var(--muted); }
-pre { white-space:pre-wrap; word-break:break-word; font-size:12px; margin:0; }
+.tiny { font-size:12px; color:var(--muted); }
 .error { color:#b42318; margin-top:10px; }
-@media (max-width: 1250px) {
-  .grid3 { grid-template-columns:1fr; }
+@media (max-width: 1100px) {
+  .grid { grid-template-columns:1fr; }
   .hero { flex-direction:column; }
 }