[T2.1] Installer (scripts/alpha/installer.nsi) registers the virtual camera, enables WER LocalDumps, creates the reco #433

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1. iamfatness

   added

   backlogRanked in docs/BACKLOG.mdRanked in docs/BACKLOG.md

   tier-2

   on Sep 10, 2026
2. iamfatness

   added 2 commits that reference this issue on Sep 12, 2026

   fix(installer): one entry point, and uninstall removes what it caused…

   ...

   f5de5f5

   docs(backlog): record the 2026-09-12 batch (#506)

   ...

   b381092
3. iamfatness commented on Sep 12, 2026

   

   iamfatness

   on Sep 12, 2026

   OwnerAuthor

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   Status 2026-09-12: PARTLY DONE (#497), and the remainder is blocked by Windows, not by us.

   Done: the installer registers the virtual camera (and uninstall unregisters it,
   BEFORE the payload delete, so a COM registration can't survive pointing at a
   deleted DLL) and creates the recording folder.

   NOT done, and cannot be done from this installer: WER LocalDumps. That key is
   HKLM-only. Measured 2026-09-12 — an HKCU LocalDumps entry for a deliberately
   crashing test exe (exit 0xC0000005) produced zero dumps, while the machine's
   HKLM configuration produced two. A per-user installer writing that key would ship
   a setting that does nothing, which is worse than not shipping it.

   The remaining work is therefore an ELEVATED step (scripts/setup-crash-dumps.ps1
   already exists), not a change to the NSIS script. Keeping this open for that.

   Two traps the done half cost, both now in CLAUDE.md: never run an interactive
   helper (regsvr32 without /s) from a silent installer — it hung a silent
   install until the 180 s timeout on two invisible modal dialogs; and a UTF-8 BOM is
   three literal characters to NSIS, so any manifest it reads must be written
   BOM-free.