[rollingrock]

Closes #169. Dead code, stale config and unread flags, plus two repo tidy-ups. Three items change behaviour on purpose; they are marked below.

What

• FRIK-038 setScale now does what its comment and the shipped INI say: fVrScale is applied to the game only when it is true. It was read and then ignored, so fVrScale was always applied. The shipped INI already has setScale = true, and the code default is now true to match, so only a player who set it to false sees a change. Behaviour change.
• FRIK-042 A left-handed player whose weapon has no left-handed offsets gets the right-handed ones instead of none, so switching handedness no longer reads as every weapon losing its position. Behaviour change.
• FRIK-040 Physical Pip-Boy button haptics fire on the hand that touches the Pip-Boy, which is the left hand in the right-arm configuration. Behaviour change for left-handed Pip-Boy users.
• FRIK-045 The geometry hide pass re-shows only the geometries FRIK hid, instead of every geometry in the array, so another mod's hidden geometry stays hidden.
• FRIK-036, 053, 046 Dead code removed: the commented-out gun reload feature (src/reload/ and its hooks), the unused renderer and patch-offset helpers in GameHooks.cpp, and the "shouldn't be here!" log line in smooth movement. The src/reload/ row leaves the subsystem map in CLAUDE.md / AGENTS.md.
• README: ROCK added to the compatibility list (grip and carry are API v2.3, the scope lens placement v2.4).
• .gitignore: the build_output_*.txt variants the build writes, and four per-machine leftovers (openvr/, changelog.txt, frik.list.txt, .codex/).

No change needed:

• FRIK-006 Nothing in the config UI changes PlayerHeight or hideHead, so there is nothing to save. The load/save asymmetry is revisited with calibration.
• FRIK-041 _pipboyEnabled is honoured inside Pipboy::onFrameUpdate (since the subsystem-disable API in 6f0e609). It returns early after the flashlight and the power-armor fix-up, which must keep running while the Pip-Boy is disabled. Gating the whole Pip-Boy update in the frame flow, as the issue suggested, would have turned the flashlight off with it.

Testing

Release build is clean with no warnings, and ctest passes all 71 test cases (FRIK's and the framework's), built against the pinned framework submodule as CI does.

In-game checks for this PR: setScale = false leaves the game's fVrScale:VR alone (FRIK.log says so); a left-handed player sees right-handed weapon offsets where no left-handed ones are saved; left-handed Pip-Boy buttons buzz the touching hand; a geometry hidden by another mod stays hidden.

In game (2026-10-13, all five open PRs merged into one build, headset sitting)

• FRIK-038: setScale = false (as a session override) left the game's fVrScale:VR alone; true applied it.
• FRIK-040: a right-hand press on the left-arm Pip-Boy logged and buzzed. The left-handed case could not be tried: with the game switched to left-handed mode live, the (holo) Pip-Boy stayed on the left arm.
• FRIK-042: in left-handed mode the Alien Blaster, which ships right-handed offsets only, logged HasWeaponOffset:true. But it was held upside down, which led to the fix below.
• Perf: FRIK's frame averaged 0.135 ms (p99 0.20 ms) over 60 s.

Fix after the sitting: bf1e3a2

The fallback applied the right-handed transform to the left hand unchanged. Every shipped right/left weapon pair differs by a half turn about the barrel and a flipped z: as is, the 32 pairs are 180 degrees off their left entry; mirrored, the median is 1.4 degrees.

The fallback is now that mirror, for the weapon offset only. The hand-pose (primHand) pairs have no such relation, so they keep falling back to none, as before.

Rebased onto main after #177, #179 and #180. The build is clean and all 73 test cases pass.

Still to do: an in-game look at a left-handed Alien Blaster.