Quest givers: givers killed as enemies keep their death script

"Familienbande" (702) turns its giver hostile and wants him killed; the
giver death rule restarted it instead. A giver hostile to the hero at death
now runs the game's label, and the load repair skips quests whose script
changes their giver's creature type (opcode 0x4f). Deferred notes: frame
drops while walking, Eingraben clearing slows.

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

docs/todo.md

@@ -266,3 +266,21 @@ Possibly related (2026-10-25, once): right after a game start the main menu
 texts were drawn as solid gold blocks (the gold text texture without the
 font's letter mask). Gone after a restart; Alt+Tab does not cause it. The
 log showed nothing unusual (all hooks and patches applied).
+
+## Frame drops while walking (2026-10-27, deferred 2026-10-30)
+
+Reported 2026-10-27. Measured 2026-10-29 (about 54 min, temporary timing in
+the Flip, engine tick and map border, since removed): 549 frames over 40 ms,
+mostly 0-1 per 10 s, worst 833 ms. Present (Flip) was slow only once; the
+time goes to the game's own engine tick (227 ticks of 18-70 ms). Our tick
+callbacks were slow only at the 10-min autosave. The map border is drawn only
+while the map is open, so it is not the cause. Next step if resumed: time the
+parts of the game tick (sector streaming while walking is the main suspect).
+Deferred by the user 2026-10-30.
+
+## Eingraben clears slows, roots and stuns (deferred 2026-10-30)
+
+Step 3 of Eingraben (docs/dwarf-arts.md): cast clears slowing, rooting and
+stunning effects on the hero. The effect kinds are unknown; plan: temporary
+log of the effects added to the hero while the user gets slowed or frozen,
+then remove those kinds on cast. Deferred by the user 2026-10-30.