forza-trigger: patch dualsense-controller for vibration freq propagation

Live strace on yarn during gameplay revealed the daemon was correctly
calling effect.vibration(freq=35) on slip events, but the OUT report
on the wire showed mode=0x26 (VIBRATION) with byte 31 (param9 =
frequency) = 0. The controller firmware treats freq=0 as "no
oscillation" — trigger sits silent in vibration mode. That's why the
user reported "doesn't react to slipping or anything" even after the
pedal-off early-return fix.

Root cause is in dualsense-controller 0.3.1 itself:
  - WriteStates.__init__ registers individual write-states for trigger
    effect params 1-7 only. params 8/9/10 are not registered.
  - update_out_report copies from per-state values to the OutReport,
    again only params 1-7.
  - The OutReport dataclass DEFINES params 1-10 (with defaults of 0)
    and Usb01OutReport.to_bytes writes all 10 to the wire.
  - effect.vibration() puts frequency in param9 — silently dropped.
  - Same hits effect.machine() (params 8,9,10) and effect.galloping()
    (param10). effect.feedback/weapon/bow only use params 1-7 so
    they happen to work.

Fix is a small upstream-style patch added under patches/dualsense-
controller/ and wired into the dualsense-controller derivation in
hosts/yarn/forza-trigger/python-packages.nix via the patches attr:
in update_out_report, after the param7 assignments, read param8/9/10
directly from the parent TriggerEffect state value (which already
carries them correctly from the call site through _set_value).

Verified post-patch by source-reading the installed library:
  out_report.left_trigger_effect_param9 = self.left_trigger_effect.value.param9
  out_report.right_trigger_effect_param9 = self.right_trigger_effect.value.param9
  (and 4 more for left/right param8/10)

Build-sandbox tests (54/54) pass via the forza-trigger-tests build
gate; full yarn NixOS closure builds clean.

Filing upstream against yesbotics/dualsense-controller-python is the
follow-up; until then this is a local patch.

patches/dualsense-controller/0001-propagate-trigger-effect-params-8-10.patch

@@ -0,0 +1,43 @@
+From: forza-trigger maintenance <none@local>
+Date: 2026-05-07
+Subject: [PATCH] WriteStates: propagate trigger-effect params 8-10
+
+The library's update_out_report only copies trigger-effect params 1-7
+from per-state values to the OUT report. Params 8/9/10 are never
+propagated and stay at their OutReport-dataclass defaults of 0. This
+silently breaks effects that use those slots — most painfully
+effect.vibration() puts frequency in param9, so vibration mode ships
+frequency=0 in the wire and the trigger does nothing while in
+vibration mode. Confirmed live with strace on yarn: byte 31 (L2
+param9) wire-byte was 0 every tick despite the daemon calling
+effect.vibration(frequency=35).
+
+Fix: read params 8-10 directly off the parent TriggerEffect state
+(which already carries them correctly through _set_value), bypassing
+the per-param individual states. No new WriteStateName enum members
+needed.
+
+Upstream: needs filing against yesbotics/dualsense-controller-python.
+
+--- a/src/dualsense_controller/core/state/write_state/WriteStates.py
++++ b/src/dualsense_controller/core/state/write_state/WriteStates.py
+@@ -269,6 +269,19 @@
+             WriteStateName.RIGHT_TRIGGER_EFFECT_PARAM6).value_raw
+         out_report.right_trigger_effect_param7 = self._get_state_by_name(
+             WriteStateName.RIGHT_TRIGGER_EFFECT_PARAM7).value_raw
++        # Library bug workaround: params 8-10 are never registered as
++        # individual write states so the per-param fan-out in
++        # _on_*_trigger_effect_changed drops them. Read directly off the
++        # parent TriggerEffect state. Without this, effect.vibration(freq=N)
++        # ships frequency=0 to the controller and the trigger sits silent
++        # in vibration mode (confirmed live with strace on yarn before
++        # patching: byte 31 = L2 param9 was 0 every tick).
++        out_report.left_trigger_effect_param8 = self.left_trigger_effect.value.param8
++        out_report.left_trigger_effect_param9 = self.left_trigger_effect.value.param9
++        out_report.left_trigger_effect_param10 = self.left_trigger_effect.value.param10
++        out_report.right_trigger_effect_param8 = self.right_trigger_effect.value.param8
++        out_report.right_trigger_effect_param9 = self.right_trigger_effect.value.param9
++        out_report.right_trigger_effect_param10 = self.right_trigger_effect.value.param10
+ 
+     def _create_and_register_state(
+             self,