Server comments describe the code to a stranger (#6221)

Rule 32 "Comments describe the product to a stranger" sweep over
src/, alembic/ and tests/. Comments and docstrings now say what the code
does and the reason as a present-tense constraint, briefly.

Removed:
- issue, task, note, rule, milestone and family-idea references
- "used to" / before-and-after narration
- quotes of decisions and incident stories from the deploying instance
- paragraph-length arguments, where a line or two carries the fact

Kept every hazard as a present-tense fact, e.g. timing oracles, the
proxy hop direction, and migrations that must stay frozen.

Also:
- Three test names lose "still"/"used to"/"pre_m304" phrasing.
- pyproject's description drops "FabledSword family".

The history these comments carried stays in Scribe and in git log.
A comment-stripping diff (Scribe snippet #6226 "codeonly.py — prove a
diff changed only comments") shows no code changed apart from the
renamed tests and the description string.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

alembic/versions/0036_note_user_state.py

@@ -4,12 +4,10 @@ Revision ID: 0036
 Revises: 0035
 Create Date: 2026-10-07
 
-Pin, archive and board order are personal organization, and until now they were
-columns on `notes`, so on a shared note they could only ever mean the owner's
-(#5176). This table holds them for everyone else: one row per (note, person it is
-shared with) who has pinned, archived or moved it. The owner keeps the note's own
-columns; a recipient with no row sees the note unpinned, unarchived, in the owner's
-order.
+Pin, archive and board order are personal. The owner's are columns on `notes`; this
+table holds everyone else's, one row per (note, person it is shared with) who has
+pinned, archived or moved it. A recipient with no row sees the note unpinned,
+unarchived, in the owner's order.
 
 `sync_revision` is stamped by the same `ts_set_sync_revision()` trigger the notes
 and labels use (0015), so a recipient's change reaches their own devices on the one