chore(miner): migrate batch 4.1 foundational lib modules to TypeScript

Converts claim-adjudication, governor-chokepoint-persisted, sentry,
idea-feasibility, rejection-state-machine, attempt-worktree,
portfolio-discovery, and process-lifecycle from plain .js + hand-maintained
.d.ts to real .ts under the existing in-place tsc emit pipeline from #7299.
Extends targeted unit tests to drive every converted file to 100%
statement/branch/function/line coverage.

Author: tryeverything24

packages/loopover-miner/lib/attempt-worktree.d.ts

@@ -1,31 +1,46 @@
 import type { WorktreeExecFn } from "@loopover/engine";
 import type { RunGitFn } from "./repo-clone.js";
-
-export function createRealWorktreeExec(timeoutMs?: number): WorktreeExecFn;
-
+/**
+ * Real child_process-backed implementation of the engine's WorktreeExecFn contract. Resolves (never
+ * rejects) on error/timeout, mirroring coding-agent-construction.js's createRealCliSubprocessSpawn -- a
+ * failed `git worktree add`'s stderr is the diagnosable signal, not something to lose to an unhandled
+ * rejection.
+ */
+export declare function createRealWorktreeExec(timeoutMs?: number): WorktreeExecFn;
 export type PrepareAttemptWorktreeOptions = {
-  baseBranch?: string;
-  cloneBaseDir?: string;
-  env?: Record<string, string | undefined>;
-  exec?: WorktreeExecFn;
-  timeoutMs?: number;
-  remoteUrl?: string;
-  runGit?: RunGitFn;
+    baseBranch?: string;
+    cloneBaseDir?: string;
+    env?: Record<string, string | undefined>;
+    exec?: WorktreeExecFn;
+    timeoutMs?: number;
+    remoteUrl?: string;
+    runGit?: RunGitFn;
 };
-
-export type PrepareAttemptWorktreeResult =
-  | { ok: true; worktreePath: string; branchName: string; repoPath: string }
-  | { ok: false; repoPath?: string; error: string };
-
-export function prepareAttemptWorktree(
-  repoFullName: string,
-  attemptId: string,
-  options?: PrepareAttemptWorktreeOptions,
-): Promise<PrepareAttemptWorktreeResult>;
-
-export function cleanupAttemptWorktree(
-  repoPath: string,
-  worktreePath: string,
-  attemptOk: boolean,
-  options?: { exec?: WorktreeExecFn; timeoutMs?: number },
-): Promise<{ ok: boolean; removed: boolean; error?: string }>;
+export type PrepareAttemptWorktreeResult = {
+    ok: true;
+    worktreePath: string;
+    branchName: string;
+    repoPath: string;
+} | {
+    ok: false;
+    repoPath?: string;
+    error: string;
+};
+/**
+ * Prepare a real, isolated git worktree for one attempt: ensure the target repo's base clone exists and is
+ * current, then create a fresh `git worktree` off it on a deterministically-named branch. Fails closed
+ * (`ok: false`) on any step's failure rather than handing back a half-prepared directory.
+ */
+export declare function prepareAttemptWorktree(repoFullName: string, attemptId: string, options?: PrepareAttemptWorktreeOptions): Promise<PrepareAttemptWorktreeResult>;
+/**
+ * Tear down an attempt's worktree once the attempt concludes, per the engine's own retention policy: a
+ * failed attempt's worktree is RETAINED for post-mortem inspection, a succeeded one is removed.
+ */
+export declare function cleanupAttemptWorktree(repoPath: string, worktreePath: string, attemptOk: boolean, options?: {
+    exec?: WorktreeExecFn;
+    timeoutMs?: number;
+}): Promise<{
+    ok: boolean;
+    removed: boolean;
+    error?: string;
+}>;