REC-102: cut stale generated mirrors and a dead maintenance receipt

Deletes four confirmed-dead tracked files:
- CultLib.txt, src/GameCult.Caching/GameCult.Caching.txt,
  src/GameCult.Unity/Assets/UI/UI.txt: concatenated snapshot copies of live
  source, carrying stale E: drive provenance and obsolete dependency
  versions. Live source under src/ remains the owner.
- tests/GameCult.Networking.Tests/lcov.info: tracked coverage output.
  .vscode/tasks.json:14 still generates it fresh via
  "/p:CoverletOutput=./lcov.info" on every coverage run, so tracking the
  stale committed copy in git is the liability, not the generation step.
- .voidbot/status/void-memory-maintenance.json: a one-time "starting"
  receipt (added whole in 4813570, never touched again) naming a dead
  E:\Projects\CultLib path and an unimplemented repo_face_heartbeat
  launcher. VoidBot's actual heartbeat state lives at
  .voidbot/status/repo-face-heartbeats.{cc,json} (see
  packages/config/src/index.ts REPO_FACE_HEARTBEAT_STATE_PATH) — a
  different file entirely; nothing reads this one.

Kill attempts:
- git grep -n for each of "CultLib\.txt", "GameCult\.Caching\.txt",
  "UI\.txt", "lcov\.info" across origin/main, excluding each file's own
  path: only .voidbot birth/distiller snapshots (auto-generated onboarding
  file-listing catalogs, not functional readers) and the one real lcov.info
  producer in .vscode/tasks.json.
- rg across all of F:/Projects (excluding target/node_modules/.git):
  gamecult-site's docs/research/gamecult-org-repo-ledger.json lists
  "CultLib.txt" as a filename in a static historical repo-file inventory
  (not a functional consumer); Aetheria/docs/cultcache-migration-cut.md
  cites GameCult.Caching.txt:157 as an evidence line number in a
  migration-history note (stale citation after this cut, not a functional
  break — flagged for the record, not fixed here since that doc is out of
  scope).
- voidbot MCP search for void-memory-maintenance.json / repo_face_heartbeat
  found only the unrelated repo-face-heartbeats state path, confirming no
  reader.

Collision check: git diff --stat origin/main against each of the other 4
CultLib worktrees (codex/recover-aetheria-authority,
codex/delvehold-isosurface, claude/media-stream-catalog, and the two
detached-HEAD worktrees, both confirmed ancestors of origin/main) over
these five paths: all empty, no in-flight work touches them.

REC-102

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

.voidbot/status/void-memory-maintenance.json

@@ -1,7 +0,0 @@
-{
-  "status": "starting",
-  "startedAt": "2026-06-14T19:46:12.715Z",
-  "stateFile": "E:\\Projects\\CultLib\\.voidbot\\state\\libby.cc",
-  "launcher": "repo_face_heartbeat",
-  "reason": "repo_face_stale_short_term_memory"
-}

CultLib.txt

@@ -1,132 +0,0 @@
-
-
-// E:\Projects\CultLib\src\GameCult.Caching\GameCult.Caching.csproj
-
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <Description>CultCache: Concurrent polymorphic cache with modular backing stores for .NET</Description>
-  </PropertyGroup>
-  
-  <ItemGroup>
-    <ProjectReference Include="..\GameCult.Logging\GameCult.Logging.csproj" />
-    <PackageReference Include="R3" Version="1.3.0" />
-    <PackageReference Include="MessagePack" Version="3.1.4" />
-    <PackageReference Include="ConcurrentHashSet " Version="1.3.0" />
-  </ItemGroup>
-</Project>
-
-// E:\Projects\CultLib\src\GameCult.Caching.MessagePack\GameCult.Caching.MessagePack.csproj
-
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <Description>File-based MessagePack backing store for CultCache</Description>
-  </PropertyGroup>
-  
-  <ItemGroup>
-    <ProjectReference Include="..\GameCult.Caching\GameCult.Caching.csproj" />
-	<ProjectReference Include="..\GameCult.Caching.MessagePack.Generator\GameCult.Caching.MessagePack.Generator.csproj"
-                  OutputItemType="Analyzer"
-                  ReferenceOutputAssembly="false" />
-    <PackageReference Include="MessagePack" Version="3.1.4" />
-  </ItemGroup>
-</Project>
-
-// E:\Projects\CultLib\src\GameCult.Caching.MessagePack.Generator\GameCult.Caching.MessagePack.Generator.csproj
-
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <!-- This tells MSBuild we are producing an analyzer -->
-    <IsRoslynComponent>true</IsRoslynComponent>
-    <Nullable>enable</Nullable>
-    <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
-    <IncludeBuildOutput>false</IncludeBuildOutput>
-
-    <!-- Optional: Pack this as a NuGet analyzer -->
-    <Description>Source generator that emits MessagePack formatters for DatabaseEntry subclasses.</Description>
-    <PackageTags>MessagePack;SourceGenerator;DatabaseEntry</PackageTags>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <!-- Core Roslyn packages for incremental generators -->
-    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.10.0" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.10.0" PrivateAssets="all" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <!-- Mark this output as an analyzer -->
-    <None Include="$(OutputPath)\$(AssemblyName).dll" Pack="true" PackagePath="analyzers/dotnet/cs" Visible="false" />
-  </ItemGroup>
-
-</Project>
-
-// E:\Projects\CultLib\src\GameCult.Logging\GameCult.Logging.csproj
-
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <Description>Simple pluggable logging interface for CultLib</Description>
-  </PropertyGroup>
-</Project>
-
-// E:\Projects\CultLib\src\GameCult.Logging.Unity\GameCult.Logging.Unity.csproj
-
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <Description>Unity integration for GameCult.Logging</Description>
-  </PropertyGroup>
-  
-  <ItemGroup>
-    <ProjectReference Include="..\GameCult.Logging\GameCult.Logging.csproj" />
-    <PackageReference Include="R3" Version="1.3.0" />
-  </ItemGroup>
-</Project>
-
-// E:\Projects\CultLib\src\GameCult.Networking\GameCult.Networking.csproj
-
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <Description>CultNet: Secure, high-performance messaging for games/servers</Description>
-  </PropertyGroup>
-  
-  <ItemGroup>
-    <ProjectReference Include="..\GameCult.Caching.MessagePack\GameCult.Caching.MessagePack.csproj" />
-    <ProjectReference Include="..\GameCult.Logging\GameCult.Logging.csproj" />
-    <ProjectReference Include="..\GameCult.Caching\GameCult.Caching.csproj" />
-    <PackageReference Include="MessagePack" Version="3.1.4" />
-    <PackageReference Include="R3" Version="1.3.0" />
-    <PackageReference Include="LiteNetLib" Version="1.3.1" />
-    <PackageReference Include="Isopoh.Cryptography.Argon2" Version="2.0.0" />
-  </ItemGroup>
-</Project>
-
-// E:\Projects\CultLib\tests\GameCult.Networking.Tests\GameCult.Networking.Tests.csproj
-
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
-    <IsPackable>false</IsPackable>
-    <RootNamespace>GameCult.Networking.Tests</RootNamespace>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\..\src\GameCult.Networking\GameCult.Networking.csproj" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <!-- NUnit framework -->
-    <PackageReference Include="coverlet.msbuild" Version="6.0.4">
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-      <PrivateAssets>all</PrivateAssets>
-    </PackageReference>
-    <PackageReference Include="NUnit" Version="4.*" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.*" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.*" />
-    <PackageReference Include="FluentAssertions" Version="6.*" />
-    <PackageReference Include="coverlet.collector" Version="6.*">
-      <PrivateAssets>all</PrivateAssets>
-    </PackageReference>
-  </ItemGroup>
-
-</Project>