fix(rp): add no-replug application recovery

[zackees]

Closes #1303

Coordinated with FastLED/FastLED#3908

Adds a target-bound RP recovery ladder that can return compatible firmware from application mode to BOOTSEL through the managed picotool binary. Forced reboot is always scoped by VID, PID, and serial identity.

Also adds fail-closed Windows recovery for the exact descriptor-failure sentinel. Recovery requires exact physical LocationPaths continuity, exact live sentinel VID/PID, and revalidation of the problem node before any exact child action; it never resets a hub, controller, or unrelated device.

Validation:

• fbuild-core, fbuild-serial, fbuild-daemon, fbuild-deploy, and fbuild-cli tests and doc-tests passed
• workspace lint and clippy passed
• full-tree production VID/PID guard and its unit tests passed
• exact-target, ambiguity, timeout/absence, phantom, wrong-sentinel, and descriptor-failure regressions passed
• pre-push review clean after resolving the exact-sentinel safety finding

Hardware status:

• fbuild 2.5.17 port scan confirms the target RP2350W is currently absent with only a stale phantom COM18 record
• The live Windows code-43 node is on another physical root port and is correctly rejected as unrelated
• Keep this PR draft until RP2350W hardware-in-the-loop recovery and 50 no-replug cycles are complete

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