diff --git a/python/ebook_search/api/routes/admin.py b/python/ebook_search/api/routes/admin.py
index 2e1fcd1..a441572 100644
--- a/python/ebook_search/api/routes/admin.py
+++ b/python/ebook_search/api/routes/admin.py
@@ -14,6 +14,11 @@ from python.ebook_search.api.dependencies import (
 from python.ebook_search.api.web import templates
 from python.ebook_search.embeddings import embed_missing_chunks, embedding_model_stats
 from python.ebook_search.ingest import ingest_configured_paths
+from python.ebook_search.protected_phrases.lib import (
+    build_missing_protected_phrases,
+    generate_candidate_phrases_for_books,
+    judge_candidate_phrases_for_books,
+)
 from python.fastapi_tools import DbSession  # noqa: TC001 FastAPI resolves this annotated dependency at runtime
 
 logger = logging.getLogger(__name__)
@@ -45,6 +50,97 @@ def scan_library(request: Request, config: AppConfig, session: DbSession) -> HTM
     return templates.TemplateResponse(request, "partials/admin_status.html", {"message": f"Indexed {count} EPUBs"})
 
 
+@router.post("/build-phrases", response_class=HTMLResponse)
+def build_phrases(request: Request, config: AppConfig, session: DbSession) -> HTMLResponse:
+    """Build protected phrases for indexed books that are missing them."""
+    try:
+        result = build_missing_protected_phrases(session, config)
+        session.commit()
+    except Exception as error:
+        session.rollback()
+        logger.exception("ebook_admin_build_phrases_failed")
+        return templates.TemplateResponse(request, "partials/error.html", {"message": str(error)}, status_code=500)
+
+    logger.info(
+        "ebook_admin_build_phrases_complete books_seen=%s books_built=%s protected=%s mentions=%s",
+        result.books_seen,
+        result.books_built,
+        result.protected_phrases,
+        result.phrase_mentions,
+    )
+    return templates.TemplateResponse(
+        request,
+        "partials/admin_status.html",
+        {
+            "message": (
+                f"Built phrases for {result.books_built} of {result.books_seen} books; "
+                f"{result.protected_phrases} protected phrases, {result.phrase_mentions} mentions"
+            )
+        },
+    )
+
+
+@router.post("/generate-ngrams", response_class=HTMLResponse)
+def generate_ngrams(request: Request, config: AppConfig, session: DbSession) -> HTMLResponse:
+    """Generate candidate n-grams for indexed books without LLM judging."""
+    try:
+        result = generate_candidate_phrases_for_books(session, config)
+        session.commit()
+    except Exception as error:
+        session.rollback()
+        logger.exception("ebook_admin_generate_ngrams_failed")
+        return templates.TemplateResponse(request, "partials/error.html", {"message": str(error)}, status_code=500)
+
+    logger.info(
+        "ebook_admin_generate_ngrams_complete books_seen=%s books_built=%s candidates=%s",
+        result.books_seen,
+        result.books_built,
+        result.candidate_phrases,
+    )
+    return templates.TemplateResponse(
+        request,
+        "partials/admin_status.html",
+        {
+            "message": (
+                f"Generated n-grams for {result.books_built} of {result.books_seen} books; "
+                f"{result.candidate_phrases} candidates stored"
+            )
+        },
+    )
+
+
+@router.post("/judge-ngrams", response_class=HTMLResponse)
+def judge_ngrams(request: Request, config: AppConfig, session: DbSession) -> HTMLResponse:
+    """Judge stored candidate n-grams and promote accepted protected phrases."""
+    try:
+        result = judge_candidate_phrases_for_books(session, config)
+        session.commit()
+    except Exception as error:
+        session.rollback()
+        logger.exception("ebook_admin_judge_ngrams_failed")
+        return templates.TemplateResponse(request, "partials/error.html", {"message": str(error)}, status_code=500)
+
+    logger.info(
+        "ebook_admin_judge_ngrams_complete books_seen=%s books_judged=%s candidates_judged=%s protected=%s mentions=%s",
+        result.books_seen,
+        result.books_judged,
+        result.candidates_judged,
+        result.protected_phrases,
+        result.phrase_mentions,
+    )
+    return templates.TemplateResponse(
+        request,
+        "partials/admin_status.html",
+        {
+            "message": (
+                f"Judged {result.candidates_judged} candidates across {result.books_judged} of "
+                f"{result.books_seen} books; {result.protected_phrases} protected phrases, "
+                f"{result.phrase_mentions} mentions"
+            )
+        },
+    )
+
+
 @router.post("/embed-missing", response_class=HTMLResponse)
 def embed_missing(request: Request, config: AppConfig, session: DbSession) -> HTMLResponse:
     """Embed chunks missing vectors for the configured model."""
diff --git a/python/ebook_search/api/routes/page.py b/python/ebook_search/api/routes/page.py
index 0cd592e..0ba67af 100644
--- a/python/ebook_search/api/routes/page.py
+++ b/python/ebook_search/api/routes/page.py
@@ -4,16 +4,17 @@ from __future__ import annotations
 
 import logging
 
-from fastapi import APIRouter, Request
-from fastapi.responses import HTMLResponse
-from sqlalchemy import select
+from fastapi import APIRouter, HTTPException, Request
+from fastapi.responses import HTMLResponse, RedirectResponse
+from sqlalchemy import func, select
 
 from python.ebook_search.api.dependencies import (
     AppConfig,  # noqa: TC001 FastAPI resolves this annotated dependency at runtime
 )
 from python.ebook_search.api.web import templates
+from python.ebook_search.protected_phrases.lib import recalculate_candidate_phrases_for_book
 from python.fastapi_tools import DbSession  # noqa: TC001 FastAPI resolves this annotated dependency at runtime
-from python.orm.richie import EbookSource
+from python.orm.richie import EbookCandidatePhrase, EbookProtectedPhrase, EbookSource
 
 logger = logging.getLogger(__name__)
 
@@ -34,25 +35,127 @@ def books(request: Request, session: DbSession) -> HTMLResponse:
     return templates.TemplateResponse(request, "books.html", {"sources": sources})
 
 
+def get_candidate_count(session: DbSession, book_id: int) -> int:
+    """Return the number of indexed candidates for one book."""
+    return (
+        session.scalar(select(func.count(EbookCandidatePhrase.id)).where(EbookCandidatePhrase.book_id == book_id)) or 0
+    )
+
+
+def get_judged_candidate_count(session: DbSession, book_id: int) -> int:
+    """Return the number of judged candidates for one book."""
+    return (
+        session.scalar(
+            select(func.count(EbookCandidatePhrase.id)).where(
+                EbookCandidatePhrase.book_id == book_id,
+                EbookCandidatePhrase.llm_judged.is_(True),
+            )
+        )
+        or 0
+    )
+
+
+def get_protected_count(session: DbSession, book_id: int) -> int:
+    """Return the number of protected phrases for one book."""
+    return (
+        session.scalar(select(func.count(EbookProtectedPhrase.id)).where(EbookProtectedPhrase.book_id == book_id)) or 0
+    )
+
+
+def get_candidates(session: DbSession, book_id: int) -> list[EbookCandidatePhrase]:
+    """Return the indexed candidates for one book."""
+    return list(
+        session.scalars(
+            select(EbookCandidatePhrase)
+            .where(EbookCandidatePhrase.book_id == book_id)
+            .order_by(EbookCandidatePhrase.candidate_score.desc())
+            .limit(100)
+        )
+    )
+
+
+def get_protected_phrases(session: DbSession, book_id: int) -> list[EbookProtectedPhrase]:
+    """Return the protected phrases for one book."""
+    return list(
+        session.scalars(
+            select(EbookProtectedPhrase)
+            .where(EbookProtectedPhrase.book_id == book_id)
+            .order_by(EbookProtectedPhrase.importance.desc())
+            .limit(100)
+        )
+    )
+
+
 @router.get("/books/{source_id}", response_class=HTMLResponse)
 def book_detail(source_id: int, request: Request, session: DbSession) -> HTMLResponse:
     """Render details for one indexed book."""
     source = session.get(EbookSource, source_id)
+    phrase_status_message = None
+    recalculated = request.query_params.get("phrases_recalculated")
+    if recalculated is not None:
+        phrase_status_message = f"Recalculated phrases; {recalculated} candidates generated"
     if source is not None:
         chapter_count = len(source.chapters)
         chunk_count = len(source.chunks)
+        candidate_count = get_candidate_count(session, source.id)
+        judged_candidate_count = get_judged_candidate_count(session, source.id)
+        protected_count = get_protected_count(session, source.id)
+        candidates = get_candidates(session, source.id)
+        protected_phrases = get_protected_phrases(session, source.id)
     else:
         chapter_count = 0
         chunk_count = 0
+        candidate_count = 0
+        judged_candidate_count = 0
+        protected_count = 0
+        candidates = []
+        protected_phrases = []
     logger.info(
-        "ebook_book_detail_loaded source_id=%s found=%s chapters=%s chunks=%s",
+        "ebook_book_detail_loaded source_id=%s found=%s chapters=%s chunks=%s candidates=%s judged=%s protected=%s",
         source_id,
         source is not None,
         chapter_count,
         chunk_count,
+        candidate_count,
+        judged_candidate_count,
+        protected_count,
     )
     return templates.TemplateResponse(
         request,
         "book_detail.html",
-        {"chapter_count": chapter_count, "chunk_count": chunk_count, "source": source},
+        {
+            "candidate_count": candidate_count,
+            "candidates": candidates,
+            "chapter_count": chapter_count,
+            "chunk_count": chunk_count,
+            "judged_candidate_count": judged_candidate_count,
+            "protected_count": protected_count,
+            "protected_phrases": protected_phrases,
+            "phrase_status_message": phrase_status_message,
+            "source": source,
+        },
+    )
+
+
+@router.post("/books/{source_id}/recalculate-phrases")
+def recalculate_book_phrases(source_id: int, config: AppConfig, session: DbSession) -> RedirectResponse:
+    """Clear and regenerate candidate phrases for one indexed book."""
+    source = session.get(EbookSource, source_id)
+    if source is None:
+        raise HTTPException(status_code=404, detail="Book not found")
+
+    result = recalculate_candidate_phrases_for_book(session, source, config)
+    logger.info(
+        "ebook_book_phrase_recalculation_complete source_id=%s candidates=%s deleted_candidates=%s "
+        "deleted_protected=%s deleted_aliases=%s deleted_mentions=%s",
+        source_id,
+        result.candidate_phrases,
+        result.deleted_candidates,
+        result.deleted_protected_phrases,
+        result.deleted_aliases,
+        result.deleted_mentions,
+    )
+    return RedirectResponse(
+        url=f"/books/{source_id}?phrases_recalculated={result.candidate_phrases}",
+        status_code=303,
     )
diff --git a/python/ebook_search/api/templates/admin.html b/python/ebook_search/api/templates/admin.html
index b2656ee..cd2dacc 100644
--- a/python/ebook_search/api/templates/admin.html
+++ b/python/ebook_search/api/templates/admin.html
@@ -1,45 +1,65 @@
-{% extends "base.html" %}
-
-{% block title %}EPUB Admin{% endblock %}
-{% block head %}<script src="https://unpkg.com/htmx.org@2.0.4"></script>{% endblock %}
-
-{% block content %}
-    <h1>Admin</h1>
-    <section id="admin-status"></section>
-    <section class="actions">
-        <form hx-post="/admin/scan" hx-target="#admin-status" hx-swap="innerHTML">
-            <button type="submit">Scan</button>
-        </form>
-        <form hx-post="/admin/embed-missing" hx-target="#admin-status" hx-swap="innerHTML">
-            <button type="submit">Embed</button>
-        </form>
-        <form hx-post="/admin/embed-all" hx-target="#admin-status" hx-swap="innerHTML">
-            <button type="submit">Embed all</button>
-        </form>
-    </section>
-    <section>
-        <h2>Embeddings</h2>
-        <table>
-            <thead>
-                <tr>
-                    <th>Model</th>
-                    <th>Dimensions</th>
-                    <th>Embedded</th>
-                    <th>Missing</th>
-                    <th>Total chunks</th>
-                </tr>
-            </thead>
-            <tbody>
-                {% for item in stats %}
-                    <tr>
-                        <td>{{ item.model_name }}</td>
-                        <td>{{ item.dimension }}</td>
-                        <td>{{ item.embedded_chunks }}</td>
-                        <td>{{ item.missing_chunks }}</td>
-                        <td>{{ item.total_chunks }}</td>
-                    </tr>
-                {% endfor %}
-            </tbody>
-        </table>
-    </section>
+{% extends "base.html" %} {% block title %}EPUB Admin{% endblock %} {% block
+head %}
+<script src="https://unpkg.com/htmx.org@2.0.4"></script>
+{% endblock %} {% block content %}
+<h1>Admin</h1>
+<section id="admin-status"></section>
+<section class="actions">
+  <form hx-post="/admin/scan" hx-target="#admin-status" hx-swap="innerHTML">
+    <button type="submit">Scan</button>
+  </form>
+  <form
+    hx-post="/admin/generate-ngrams"
+    hx-target="#admin-status"
+    hx-swap="innerHTML"
+  >
+    <button type="submit">Generate n-grams</button>
+  </form>
+  <form
+    hx-post="/admin/judge-ngrams"
+    hx-target="#admin-status"
+    hx-swap="innerHTML"
+  >
+    <button type="submit">Judge n-grams</button>
+  </form>
+  <form
+    hx-post="/admin/embed-missing"
+    hx-target="#admin-status"
+    hx-swap="innerHTML"
+  >
+    <button type="submit">Embed</button>
+  </form>
+  <form
+    hx-post="/admin/embed-all"
+    hx-target="#admin-status"
+    hx-swap="innerHTML"
+  >
+    <button type="submit">Embed all</button>
+  </form>
+</section>
+<section>
+  <h2>Embeddings</h2>
+  <table>
+    <thead>
+      <tr>
+        <th>Model</th>
+        <th>Dimensions</th>
+        <th>Embedded</th>
+        <th>Missing</th>
+        <th>Total chunks</th>
+      </tr>
+    </thead>
+    <tbody>
+      {% for item in stats %}
+      <tr>
+        <td>{{ item.model_name }}</td>
+        <td>{{ item.dimension }}</td>
+        <td>{{ item.embedded_chunks }}</td>
+        <td>{{ item.missing_chunks }}</td>
+        <td>{{ item.total_chunks }}</td>
+      </tr>
+      {% endfor %}
+    </tbody>
+  </table>
+</section>
 {% endblock %}
diff --git a/python/ebook_search/api/templates/book_detail.html b/python/ebook_search/api/templates/book_detail.html
index 0da0fd6..1102bec 100644
--- a/python/ebook_search/api/templates/book_detail.html
+++ b/python/ebook_search/api/templates/book_detail.html
@@ -6,6 +6,9 @@
     {% if source %}
         <h1>{{ source.title }}</h1>
         <p class="meta">{{ source.author or "Unknown author" }}</p>
+        {% if phrase_status_message %}
+            <p class="status">{{ phrase_status_message }}</p>
+        {% endif %}
         <dl class="card">
             <dt>File</dt>
             <dd>{{ source.file_path }}</dd>
@@ -13,7 +16,84 @@
             <dd>{{ chapter_count }}</dd>
             <dt>Chunks</dt>
             <dd>{{ chunk_count }}</dd>
+            <dt>Candidates</dt>
+            <dd>{{ candidate_count }}</dd>
+            <dt>Judged</dt>
+            <dd>{{ judged_candidate_count }}</dd>
+            <dt>Protected</dt>
+            <dd>{{ protected_count }}</dd>
         </dl>
+        <form
+            method="post"
+            action="/books/{{ source.id }}/recalculate-phrases"
+            onsubmit="return confirm('Remove old phrases for this book and generate new candidates?');"
+        >
+            <button type="submit">Recalculate phrases</button>
+        </form>
+
+        <section>
+            <h2>Candidate n-grams</h2>
+            {% if candidates %}
+                <table>
+                    <thead>
+                        <tr>
+                            <th>Phrase</th>
+                            <th>Status</th>
+                            <th>Score</th>
+                            <th>Count</th>
+                            <th>Chapters</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        {% for candidate in candidates %}
+                            <tr>
+                                <td>{{ candidate.phrase_text }}</td>
+                                <td>
+                                    {% if candidate.llm_judged %}
+                                        {% if candidate.llm_keep %}Kept{% else %}Rejected{% endif %}
+                                    {% else %}
+                                        Candidate
+                                    {% endif %}
+                                </td>
+                                <td>{{ "%.2f"|format(candidate.candidate_score) }}</td>
+                                <td>{{ candidate.raw_count }}</td>
+                                <td>{{ candidate.chapter_count }}</td>
+                            </tr>
+                        {% endfor %}
+                    </tbody>
+                </table>
+            {% else %}
+                <p>No candidate n-grams.</p>
+            {% endif %}
+        </section>
+
+        <section>
+            <h2>Protected phrases</h2>
+            {% if protected_phrases %}
+                <table>
+                    <thead>
+                        <tr>
+                            <th>Phrase</th>
+                            <th>Type</th>
+                            <th>Confidence</th>
+                            <th>Importance</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        {% for phrase in protected_phrases %}
+                            <tr>
+                                <td>{{ phrase.phrase_text }}</td>
+                                <td>{{ phrase.phrase_type or "phrase" }}</td>
+                                <td>{{ "%.2f"|format(phrase.confidence) }}</td>
+                                <td>{{ "%.2f"|format(phrase.importance) }}</td>
+                            </tr>
+                        {% endfor %}
+                    </tbody>
+                </table>
+            {% else %}
+                <p>No protected phrases.</p>
+            {% endif %}
+        </section>
     {% else %}
         <h1>Book not found</h1>
     {% endif %}