fix(collect): exclude posts from IsActive=0 blogs in --collect 1

Blogs.IsActive is the crawler's work-selection flag (Rolodex removal
sets it to 0) and is independent of Posts.IsActive/Notes.IsActive --
deactivating a blog never touches its posts' own IsActive column, so
--collect 1 kept re-queuing posts for blogs that had been deactivated.

Join Blogs into the PostsWithCount CTE's source filter and require
COALESCE(BL.IsActive, 1) = 1. Since the hardcoded zomb-eh re-queue
branch reads from PostsWithCount rather than Posts directly, it now
inherits this filter automatically -- if zomb-eh is ever deactivated,
its rows disappear from PostsWithCount and the union branch
contributes nothing, with no special-case code needed.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

URLNotesGrabberCORE/DataAccess.cs

@@ -888,16 +888,25 @@ namespace URLNotesGrabberCORE
                         beforeDateFilter = $"WHERE (U.NotesGatheredDateTime < {unixTimestamp} OR U.NotesGatheredDateTime IS NULL)" + Environment.NewLine;
                     }
 
+                    // Blogs.IsActive is the crawler's work-selection flag (Rolodex removal sets it to 0)
+                    // and is independent of Posts.IsActive/Notes.IsActive -- deactivating a blog does not
+                    // touch its posts' own IsActive column. AndIsActive("Posts", ...) above therefore does
+                    // not catch a deactivated blog; this join against the source rows is what does, so a
+                    // blog taken IsActive = 0 in Blogs stops being re-queued by --collect 1 even if its
+                    // posts were never individually marked inactive. Blogs.BlogName is that table's PRIMARY
+                    // KEY, so the join rides an index rather than scanning it.
+                    //
                     // Same WHERE/AND juggling WhereIsActive does, extended to the optional blog predicate:
                     // either clause may be absent, so the first one present has to open the WHERE.
-                    string sourceClause = AndIsActive("Posts", "P", DBPath) + (filterByBlog ? " AND P.BlogName = @blogName" : string.Empty);
+                    string sourceClause = AndIsActive("Posts", "P", DBPath) + " AND COALESCE(BL.IsActive, 1) = 1" + (filterByBlog ? " AND P.BlogName = @blogName" : string.Empty);
                     string sourceFilter = sourceClause.Length == 0 ? string.Empty : " WHERE" + sourceClause.Substring(" AND".Length);
 
                     // The zomb-eh branch re-queues that blog's *already collected* posts every 3 days. It needs
-                    // no blog-filter handling of its own: it reads PostsWithCount, which the filter has already
+                    // no blog-filter or IsActive handling of its own: it reads PostsWithCount, which the source
-                    // scoped, so it contributes its rows when the filter names zomb-eh and nothing otherwise.
+                    // filter above -- Blogs.IsActive included -- has already scoped, so it contributes its rows
-                    // That keeps a filtered worklist a strict subset of the unfiltered one -- "--collect 1 X"
+                    // only when zomb-eh itself is still IsActive = 1 there. That keeps a filtered worklist a
-                    // returns exactly the rows "--collect 1" would have returned for X.
+                    // strict subset of the unfiltered one -- "--collect 1 X" returns exactly the rows
+                    // "--collect 1" would have returned for X.
                     //
                     // --force drops the age gate only. NotFound = 0 and the IsActive/blog scoping above still
                     // apply: the flag is "re-collect early", not "collect rows every other path excludes".
@@ -950,7 +959,7 @@ namespace URLNotesGrabberCORE
                           "        P.HasNotesGathered," + Environment.NewLine +
                           "        P.NotFound," + Environment.NewLine +
                           "        P.PostDate" + Environment.NewLine +
-                          "    FROM Posts P" + sourceFilter + Environment.NewLine +
+                          "    FROM Posts P LEFT JOIN Blogs BL ON BL.BlogName = P.BlogName" + sourceFilter + Environment.NewLine +
                           ")," + Environment.NewLine +
                           "Unioned AS" + Environment.NewLine +
                           "(" + Environment.NewLine +