REC-095: delete confirmed-dead narrative test fixtures and zero-byte scratch file

Deletes only the two candidate groups that survived independent re-verification
and had zero collision with the live codex/aetheria-state-rebuild branch:

- GameData/Narrative/HeroOrZero.json, GameData/Narrative/Locations/TestA.json,
  GameData/Narrative/Quests/TestQuest.json: StoryProcessor.cs only ever calls
  DirectoryInfo.EnumerateFiles("*.ink"/"*ink") against these directories; no
  .cs, .csproj Content/None glob, or other file in the tree references these
  basenames. Confirmed via rg across the whole tree and voidbot search_sources
  (no hits either way).

- Vault/Aetheria/scratch.md: zero-byte Obsidian vault scratch file, no
  references anywhere in the tree, no voidbot search_sources hits.

Kill-attempts that came up empty (recorded for the record, not evidence of
absence beyond what's stated):
- rg for basenames HeroOrZero.json/TestA.json/TestQuest.json/scratch.md
  across the whole tree excluding Library/Temp/obj/bin/.git: no hits.
- Economy.Server.csproj and Economy.Shared.csproj inspected for wildcard
  Content/None includes that might implicitly sweep in the JSON files: none
  found (Economy.Shared only globs ServerShared/**/*.cs as Compile).
- mcp__voidbot__search_sources queried for both candidate groups: no
  consumer hits, only unrelated fuzzy matches.

NOT deleted here despite being in REC-095's candidate list (see coordinator
report for full detail): StrategyGameManager.csbak, CultClient.cs,
CultCache.cs backing-store classes, Economy.Server/appsettings.json, and
Economy.Shared/bin+obj all collide with commits already on
origin/codex/aetheria-state-rebuild (which has independently already deleted
or heavily rewritten those exact paths) and are therefore BLOCKED per the
no-touch-live-branch-paths rule, not executed from this worktree.

REC-095.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

GameData/Narrative/Locations/TestA.json

@@ -1 +0,0 @@
-{"inkVersion":20,"root":[[{"#":"constraint: DistanceFrom start = 0"},{"#":"type: Station"},{"#":"security: Open"},{"#":"faction: Miss Terri"},{"#":"name: Test Location 1"},{"#":"nameZone: Start Zone"},{"->":"start"},["done",{"#f":5,"#n":"g-0"}],null],"done",{"start":[["^This is the start of the location story.","\n","ev","str","^Go to location A1","/str","/ev",{"*":".^.c-0","flg":4},["ev",{"^->":"start.0.8.$r1"},{"temp=":"$r"},"str",{"->":".^.s"},[{"#n":"$r1"}],"/str","/ev",{"*":".^.^.c-1","flg":18},{"s":["^This will end the story.",{"->":"$r","var":true},null]}],{"c-0":["^ ",{"->":"A1"},"\n",{"->":".^.^.g-0"},{"#f":5}],"c-1":["ev",{"^->":"start.0.c-1.$r2"},"/ev",{"temp=":"$r"},{"->":".^.^.8.s"},[{"#n":"$r2"}],"\n",{"->":".^.^.g-0"},{"#f":5}],"g-0":["^They lived happily ever after.","\n","end",{"#f":5}]}],{"#f":1}],"A1":[["^This content is in location A1","\n","ev","str","^Return to start","/str","/ev",{"*":".^.c-0","flg":4},["ev",{"^->":"A1.0.8.$r1"},{"temp=":"$r"},"str",{"->":".^.s"},[{"#n":"$r1"}],"/str","/ev",{"*":"A1.0.c-1","flg":2},{"s":["^Choice in location A1 ",{"->":"$r","var":true},null]}],{"c-0":["^ ",{"->":"start"},"\n",{"#f":5}],"c-1":["ev",{"^->":"A1.0.c-1.$r2"},"/ev",{"temp=":"$r"},{"->":"A1.0.8.s"},[{"#n":"$r2"}],"end","\n",{"#f":5}]}],{"#f":1}],"#f":1}],"listDefs":{}}

GameData/Narrative/Quests/TestQuest.json

@@ -1 +0,0 @@
-{"inkVersion":20,"root":[[["done",{"#f":5,"#n":"g-0"}],null],"done",{"A1":[[{"#":"location: TestA"},{"#":"required"},"ev","str","^This choice is being injected from TestQuest","/str","/ev",{"*":".^.c-0","flg":4},{"c-0":["^ ",{"->":"A1A"},"\n",{"#f":5}]}],{"#f":1}],"A1A":[["^This is a branch thread being injected by TestQuest","\n","ev","str","^Exit the injected thread","/str","/ev",{"*":".^.c-0","flg":20},{"c-0":["^ ","end","\n",{"#f":5}]}],{"#f":1}],"#f":1}],"listDefs":{}}