MAINT-20 part 1 review: restore three lost lines, rewrap ragged comments

Comment, docstring and DECISIONS only (same-code script OK; python -OO
bytecode now identical for all six files).
- peakguard.charge_room_w: one-line docstring + SAFETY-125 pointer (cut whole).
- peakguard.shaping_suspended: keep 'the one place this conjunction is
  written; do not inline it'.
- price_forecast module note: an hour with no price and no yesterday is left
  out, never filled (test_price.py 14d cites the module note for it).
- Refill comment blocks the cut left ragged; DECISIONS pointers on one line.
- FCST-04 note: _yesterday_of(), not _previous_day(); FCST-03 note: the 49
  stronger cases are why the rule is a real change.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bdqr7PiaHcBnzPituu2yTC

goodwe_controller/app/price_forecast.py

@@ -6,8 +6,10 @@ price. This module owns the fill and the gate; the widening arithmetic is in
 price.py. The flag is never passed through: a carried point is built only by
 `_carried()` (no flag parameter), a published point is passed by identity, and
 `_audit()` raises on a mismatch. The fill keys on the Brussels wall-clock hour,
-and a sub-hourly feed is never decimated. `begin_phase()` is the price-justified
-entry point only; the calendar path is untouched. All of it:
+and a sub-hourly feed is never decimated. An hour with neither a published
+price nor a yesterday value is left out, never filled (`at()` raises `Absence`,
+11.4 applies). `begin_phase()` is the price-justified entry point only; the
+calendar path is untouched. All of it:
 DECISIONS/FCST-03-the-hours-not-yet-published.md."""
 
 import logging
@@ -124,8 +126,7 @@ def fill_from_yesterday(read: PriceRead, *, yesterday: PriceRead,
     published = _published_by_hour(read)
 
     # Yesterday's profile, keyed by BRUSSELS WALL-CLOCK HOUR. First point wins
-    # when
-    # yesterday itself was a 25-hour day.
+    # when yesterday itself was a 25-hour day.
     by_local_hour = {}
     yesterday.match(
         series=lambda r: [by_local_hour.setdefault(brussels(p.start).hour, p)