powershell-lsp: rule-rationale override layer (N1.1 slice 1) + ROADMAP re-scope + v1.24.2 (000125)

[manderse21]

Dispatch 000125 -- combined sweep train. Three code-bearing legs land here; the survey/poll/PK legs are records-only in the hub outbox. HELD for Mike's merge gate -- nothing tagged, verified, or published.

Leg 1 -- owned rationale-override layer (N1.1 slice 1)

Adds $OwnedRationaleOverrides to scripts/regen-rule-rationales.ps1: hand-authored why+fix rationales that REPLACE the weak auto-derived PSSA text for four idiom-family codes -- PSShouldProcess, PSUseSupportsShouldProcess, PSAvoidUsingWriteHost, PSAvoidShouldContinueWithoutForce. PSShouldProcess is inside the PSES-15 default surface (reflection-confirmed), so its improved line reaches every user; the other three are base-only. The Write-Host fix leads with Write-Information/Write-Verbose, never Write-Output.

All seven inherited design constraints (000124 leg-2 survey) hold, each proven RED->GREEN:

• overrides hand-authored in the generator, artifact regenerated (never hand-edited);
• -Check drift goes RED on an override's presence/key/text, on an artifact-only edit, and on a pin bump changing the derived text under an override (the artifact records the replaced derived text);
• the generator THROWS on a vacuous override (equals the derived text), on a non-base key, and on an owned-code collision;
• artifact records overrides + override_count = 4; 180-char cap, printable-ASCII fail-closed, LF, no BOM;
• integration proofs: a Write-Host finding under ruleset=base carries the override text (not the Write-Output-led derived text); the PSShouldProcess override renders on the DEFAULT surface.

Surgical: exactly the 4 override entries changed; the other 50 PSSA + 5 owned entries are byte-identical to HEAD.

Leg 2 -- ROADMAP N1.1 re-scope (docs)

Re-scopes the Horizon 1 N1.1 entry from new detection to guidance quality per the 000124 evidence (no idiom candidate clears a 0%-FP bar as new detection). Names slice 1 = 000125; keeps ThrowTerminatingError deferred-unmeasurable with the corpus gap named. Also fixes Section 3 row 8 (an approved deviation -- a feedback-table cell that would otherwise contradict the re-scoped entry). Exactly two hunks.

Leg 5 -- release prep (PATCH -> 1.24.2)

Lockstep bump of both manifests + dated [1.24.2] CHANGELOG entry with the PATCH: lead-in. Classified PATCH from the on-disk policy: a wording-quality improvement to rationale lines that already render, not a new capability. Same content-fix class as [1.23.1]/[1.24.1]; explicitly NOT leaned on [1.21.1] (whose PATCH rested on the default surface being byte-unchanged, which does not hold here).

Scope

No base.psd1 / ruleset edit, no CONTRACT.md change, no knob, no new detection rule. Full local suite green on both hosts modulo a pre-existing, intermittent, host-independent ServeShim-lifecycle flake (documented in the outbox; unrelated subsystem).

https://claude.ai/code/session_01Jq8dQqSvpmcTQRFK4jjEob