Phase 0+1: native post writes, Ghost no longer write-primary

- Final sync script with HTML verification + author→user migration
- Make ghost_id nullable on posts/authors/tags, add UUID/timestamp defaults
- Add user profile fields (bio, slug, profile_image, etc.) to User model
- New PostUser M2M table (replaces post_authors for new posts)
- PostWriter service: direct DB CRUD with Lexical rendering, optimistic
  locking, AP federation, tag upsert
- Rewrite create/edit/settings routes to use PostWriter (no Ghost API calls)
- Neuter Ghost webhooks (post/page/author/tag → 204 no-op)
- Disable Ghost startup sync

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

blog/bp/post/admin/routes.py

@@ -15,6 +15,43 @@ from shared.browser.app.utils.htmx import is_htmx_request
 from shared.sx.helpers import sx_response
 from shared.utils import host_url
 
+def _post_to_edit_dict(post) -> dict:
+    """Convert an ORM Post to a dict matching the shape templates expect.
+
+    The templates were written for Ghost Admin API responses, so we mimic
+    that structure (dot-access on dicts via Jinja) from ORM columns.
+    """
+    d: dict = {}
+    for col in (
+        "id", "slug", "title", "html", "plaintext", "lexical", "mobiledoc",
+        "feature_image", "feature_image_alt", "feature_image_caption",
+        "excerpt", "custom_excerpt", "visibility", "status", "featured",
+        "is_page", "email_only", "canonical_url",
+        "meta_title", "meta_description",
+        "og_image", "og_title", "og_description",
+        "twitter_image", "twitter_title", "twitter_description",
+        "custom_template", "reading_time", "comment_id",
+    ):
+        d[col] = getattr(post, col, None)
+
+    # Timestamps as ISO strings (templates do [:16] slicing)
+    for ts in ("published_at", "updated_at", "created_at"):
+        val = getattr(post, ts, None)
+        d[ts] = val.isoformat() if val else ""
+
+    # Tags as list of dicts with .name (for Jinja map(attribute='name'))
+    if hasattr(post, "tags") and post.tags:
+        d["tags"] = [{"name": t.name, "slug": t.slug, "id": t.id} for t in post.tags]
+    else:
+        d["tags"] = []
+
+    # email/newsletter — not available without Ghost, set safe defaults
+    d["email"] = None
+    d["newsletter"] = None
+
+    return d
+
+
 def register():
   bp = Blueprint("admin", __name__, url_prefix='/admin')
 
@@ -341,11 +378,18 @@ def register():
   @bp.get("/settings/")
   @require_post_author
   async def settings(slug: str):
-    from ...blog.ghost.ghost_posts import get_post_for_edit
+    from models.ghost_content import Post
+    from sqlalchemy import select as sa_select
+    from sqlalchemy.orm import selectinload
 
-    ghost_id = g.post_data["post"]["ghost_id"]
-    is_page = bool(g.post_data["post"].get("is_page"))
-    ghost_post = await get_post_for_edit(ghost_id, is_page=is_page)
+    post_id = g.post_data["post"]["id"]
+    post = (await g.s.execute(
+        sa_select(Post)
+        .where(Post.id == post_id)
+        .options(selectinload(Post.tags))
+    )).scalar_one_or_none()
+
+    ghost_post = _post_to_edit_dict(post) if post else {}
     save_success = request.args.get("saved") == "1"
 
     from shared.sx.page import get_template_context
@@ -368,12 +412,10 @@ def register():
   @bp.post("/settings/")
   @require_post_author
   async def settings_save(slug: str):
-    from ...blog.ghost.ghost_posts import update_post_settings
-    from ...blog.ghost.ghost_sync import sync_single_post, sync_single_page
+    from services.post_writer import update_post_settings, OptimisticLockError
     from shared.browser.app.redis_cacher import invalidate_tag_cache
 
-    ghost_id = g.post_data["post"]["ghost_id"]
-    is_page = bool(g.post_data["post"].get("is_page"))
+    post_id = g.post_data["post"]["id"]
     form = await request.form
 
     updated_at = form.get("updated_at", "")
@@ -406,49 +448,55 @@ def register():
     kwargs["featured"] = form.get("featured") == "on"
     kwargs["email_only"] = form.get("email_only") == "on"
 
-    # Tags — comma-separated string → list of {"name": "..."} dicts
+    # Tags — comma-separated string → list of names
     tags_str = form.get("tags", "").strip()
-    if tags_str:
-      kwargs["tags"] = [{"name": t.strip()} for t in tags_str.split(",") if t.strip()]
-    else:
-      kwargs["tags"] = []
+    tag_names = [t.strip() for t in tags_str.split(",") if t.strip()] if tags_str else []
 
-    # Update in Ghost
-    await update_post_settings(
-        ghost_id=ghost_id,
-        updated_at=updated_at,
-        is_page=is_page,
-        **kwargs,
-    )
+    try:
+        post = await update_post_settings(
+            g.s,
+            post_id=post_id,
+            expected_updated_at=updated_at,
+            tag_names=tag_names,
+            **kwargs,
+        )
+    except OptimisticLockError:
+        from urllib.parse import quote
+        return redirect(
+            host_url(url_for("blog.post.admin.settings", slug=slug))
+            + "?error=" + quote("Someone else edited this post. Please reload and try again.")
+        )
 
-    # Sync to local DB
-    if is_page:
-        await sync_single_page(g.s, ghost_id)
-    else:
-        await sync_single_post(g.s, ghost_id)
     await g.s.flush()
 
     # Clear caches
     await invalidate_tag_cache("blog")
     await invalidate_tag_cache("post.post_detail")
 
-    return redirect(host_url(url_for("blog.post.admin.settings", slug=slug)) + "?saved=1")
+    # Redirect using the (possibly new) slug
+    return redirect(host_url(url_for("blog.post.admin.settings", slug=post.slug)) + "?saved=1")
 
   @bp.get("/edit/")
   @require_post_author
   async def edit(slug: str):
-    from ...blog.ghost.ghost_posts import get_post_for_edit
+    from models.ghost_content import Post
+    from sqlalchemy import select as sa_select
+    from sqlalchemy.orm import selectinload
     from shared.infrastructure.data_client import fetch_data
 
-    ghost_id = g.post_data["post"]["ghost_id"]
-    is_page = bool(g.post_data["post"].get("is_page"))
-    ghost_post = await get_post_for_edit(ghost_id, is_page=is_page)
+    post_id = g.post_data["post"]["id"]
+    post = (await g.s.execute(
+        sa_select(Post)
+        .where(Post.id == post_id)
+        .options(selectinload(Post.tags))
+    )).scalar_one_or_none()
+
+    ghost_post = _post_to_edit_dict(post) if post else {}
     save_success = request.args.get("saved") == "1"
     save_error = request.args.get("error", "")
 
     # Newsletters live in db_account — fetch via HTTP
     raw_newsletters = await fetch_data("account", "newsletters", required=False) or []
-    # Convert dicts to objects with .name/.ghost_id attributes for template compat
     from types import SimpleNamespace
     newsletters = [SimpleNamespace(**nl) for nl in raw_newsletters]
 
@@ -475,20 +523,16 @@ def register():
   @require_post_author
   async def edit_save(slug: str):
     import json
-    from ...blog.ghost.ghost_posts import update_post
     from ...blog.ghost.lexical_validator import validate_lexical
-    from ...blog.ghost.ghost_sync import sync_single_post, sync_single_page
+    from services.post_writer import update_post as writer_update, OptimisticLockError
     from shared.browser.app.redis_cacher import invalidate_tag_cache
 
-    ghost_id = g.post_data["post"]["ghost_id"]
-    is_page = bool(g.post_data["post"].get("is_page"))
+    post_id = g.post_data["post"]["id"]
     form = await request.form
     title = form.get("title", "").strip()
     lexical_raw = form.get("lexical", "")
     updated_at = form.get("updated_at", "")
     status = form.get("status", "draft")
-    publish_mode = form.get("publish_mode", "web")
-    newsletter_slug = form.get("newsletter_slug", "").strip() or None
     feature_image = form.get("feature_image", "").strip()
     custom_excerpt = form.get("custom_excerpt", "").strip()
     feature_image_caption = form.get("feature_image_caption", "").strip()
@@ -504,76 +548,51 @@ def register():
     if not ok:
       return redirect(host_url(url_for("blog.post.admin.edit", slug=slug)) + "?error=" + quote(reason))
 
-    # Update in Ghost (content save — no status change yet)
-    ghost_post = await update_post(
-        ghost_id=ghost_id,
-        lexical_json=lexical_raw,
-        title=title or None,
-        updated_at=updated_at,
-        feature_image=feature_image,
-        custom_excerpt=custom_excerpt,
-        feature_image_caption=feature_image_caption,
-        is_page=is_page,
-    )
-
     # Publish workflow
     is_admin = bool((g.get("rights") or {}).get("admin"))
     publish_requested_msg = None
 
-    # Guard: if already emailed, force publish_mode to "web" to prevent re-send
-    already_emailed = bool(ghost_post.get("email") and ghost_post["email"].get("status"))
-    if already_emailed and publish_mode in ("email", "both"):
-      publish_mode = "web"
+    # Determine effective status
+    effective_status: str | None = None
+    current_status = g.post_data["post"].get("status", "draft")
 
-    if status == "published" and ghost_post.get("status") != "published" and not is_admin:
-      # Non-admin requesting publish: don't send status to Ghost, set local flag
+    if status == "published" and current_status != "published" and not is_admin:
+      # Non-admin requesting publish: keep as draft, set local flag
       publish_requested_msg = "Publish requested — an admin will review."
-    elif status and status != ghost_post.get("status"):
-      # Status is changing — determine email params based on publish_mode
-      email_kwargs: dict = {}
-      if status == "published" and publish_mode in ("email", "both") and newsletter_slug:
-        email_kwargs["newsletter_slug"] = newsletter_slug
-        email_kwargs["email_segment"] = "all"
-        if publish_mode == "email":
-          email_kwargs["email_only"] = True
+    elif status and status != current_status:
+      effective_status = status
 
-      from ...blog.ghost.ghost_posts import update_post as _up
-      ghost_post = await _up(
-          ghost_id=ghost_id,
+    try:
+      post = await writer_update(
+          g.s,
+          post_id=post_id,
           lexical_json=lexical_raw,
-          title=None,
-          updated_at=ghost_post["updated_at"],
-          status=status,
-          is_page=is_page,
-          **email_kwargs,
+          title=title or None,
+          expected_updated_at=updated_at,
+          feature_image=feature_image or None,
+          custom_excerpt=custom_excerpt or None,
+          feature_image_caption=feature_image_caption or None,
+          status=effective_status,
+      )
+    except OptimisticLockError:
+      return redirect(
+          host_url(url_for("blog.post.admin.edit", slug=slug))
+          + "?error=" + quote("Someone else edited this post. Please reload and try again.")
       )
 
-    # Sync to local DB
-    if is_page:
-        await sync_single_page(g.s, ghost_id)
-    else:
-        await sync_single_post(g.s, ghost_id)
+    # Handle publish_requested flag
+    if publish_requested_msg:
+        post.publish_requested = True
+    elif status == "published" and is_admin:
+        post.publish_requested = False
     await g.s.flush()
 
-    # Handle publish_requested flag on the local post
-    from models.ghost_content import Post
-    from sqlalchemy import select as sa_select
-    local_post = (await g.s.execute(
-        sa_select(Post).where(Post.ghost_id == ghost_id)
-    )).scalar_one_or_none()
-    if local_post:
-        if publish_requested_msg:
-            local_post.publish_requested = True
-        elif status == "published" and is_admin:
-            local_post.publish_requested = False
-        await g.s.flush()
-
     # Clear caches
     await invalidate_tag_cache("blog")
     await invalidate_tag_cache("post.post_detail")
 
-    # Redirect to GET to avoid resubmit warning on refresh (PRG pattern)
-    redirect_url = host_url(url_for("blog.post.admin.edit", slug=slug)) + "?saved=1"
+    # Redirect to GET (PRG pattern) — use post.slug in case it changed
+    redirect_url = host_url(url_for("blog.post.admin.edit", slug=post.slug)) + "?saved=1"
     if publish_requested_msg:
         redirect_url += "&publish_requested=1"
     return redirect(redirect_url)