wip(freestyle/acr): grounding & edit-tool fixes + ACR-compiler experiment

This branch's uncommitted WIP, committed together (entangled at file level).
Distinct pieces of work:

Freestyle QA fixes (this session):
- FileEditTool: pre-validate replace anchor in validateRequest — reject a
  missing/ambiguous target BEFORE the approval gate, mirroring read/write's
  file-not-found / read-before-write pre-checks. Shared not-found/ambiguous
  messages between validate and execute so they can't drift.
- PlanGrounder: add `scanned` flag; when no RepoMapComputedEvent was recorded,
  repoMapPaths is "unknown" not "empty workspace" — skip scope grounding
  (which proves a path ABSENT) so real paths (apps/server/**) aren't falsely
  rejected. Build-manifest check still runs.
- FreestyleDriver: wire scanned=(repoMap!=null); on plan rejection emit a
  session-terminal WorkflowFailedEvent so a rejected run reads FAILED, not the
  COMPLETED-lie (last verdict was the planning-phase WorkflowCompleted).
- ServerModule: resolve project-memory workspace root from the session's bound
  workspace (sessionWorkspaceRoot) instead of boot-static pm.repoRoot(), fixing
  the workspace-binding divergence (correx vs empty scratch dir). Retire tracked
  in Vikunja #266.
- LaunchRegistrationRaceTest: join registered jobs before asserting launchCount
  — computeIfAbsent returns the Job immediately but the fire-and-forget launch
  body lagged awaitAll (the 49-vs-50 flake).

ACR concept-compiler experiment (pre-existing WIP on this branch):
- ExecutionPlanCompiler/Model/PlanLinter, #264 needs-seam (sessionArtifacts),
  LSP diagnostics subsystem (LspDiagnosticEvents/Runner/Lsp4j), BootWorkspace,
  config surface, workflow prompts/schemas, orchestrator advance-don't-rerun.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

core/config/src/main/kotlin/com/correx/core/config/ConfigLoader.kt

@@ -217,6 +217,7 @@ object ConfigLoader {
     private const val DEFAULT_MAX_CLARIFICATION_ROUNDS = 3
     private const val DEFAULT_REVIEW_BLOCK_MIN_CONFIDENCE = 0.7
     private const val DEFAULT_REVIEW_BLOCK_RETRY_CAP = 20
+    private const val DEFAULT_REVIEW_LOOP_MAX_CYCLES = 3
     private const val DEFAULT_MAX_REFINEMENT = 3
     private const val DEFAULT_RECOVERY_ROUTE_BUDGET = 2
     private const val DEFAULT_INTENT_ROUTE_BUDGET = 2
@@ -716,6 +717,8 @@ object ConfigLoader {
             reviewBlockMinConfidence =
                 asDouble(orchestrationSection["review_block_min_confidence"], DEFAULT_REVIEW_BLOCK_MIN_CONFIDENCE),
             reviewBlockRetryCap = asInt(orchestrationSection["review_block_retry_cap"], DEFAULT_REVIEW_BLOCK_RETRY_CAP),
+            reviewLoopMaxCycles =
+                asInt(orchestrationSection["review_loop_max_cycles"], DEFAULT_REVIEW_LOOP_MAX_CYCLES),
             defaultMaxRefinement = asInt(orchestrationSection["default_max_refinement"], DEFAULT_MAX_REFINEMENT),
             recoveryRouteBudget = asInt(orchestrationSection["recovery_route_budget"], DEFAULT_RECOVERY_ROUTE_BUDGET),
             intentRouteBudget = asInt(orchestrationSection["intent_route_budget"], DEFAULT_INTENT_ROUTE_BUDGET),

core/config/src/main/kotlin/com/correx/core/config/CorrexConfig.kt

@@ -130,6 +130,8 @@ data class OrchestrationKnobs(
     val maxClarificationRounds: Int = 3,
     val reviewBlockMinConfidence: Double = 0.7,
     val reviewBlockRetryCap: Int = 20,
+    /** Review→rework cycles before deterministic escalation to the recovery stage. */
+    val reviewLoopMaxCycles: Int = 3,
     val defaultMaxRefinement: Int = 3,
     val recoveryRouteBudget: Int = 2,
     val intentRouteBudget: Int = 2,

core/config/src/main/kotlin/com/correx/core/config/CorrexConfigWriter.kt

@@ -98,6 +98,7 @@ object CorrexConfigWriter {
         b.kv("max_clarification_rounds", cfg.orchestration.maxClarificationRounds)
         b.kv("review_block_min_confidence", cfg.orchestration.reviewBlockMinConfidence)
         b.kv("review_block_retry_cap", cfg.orchestration.reviewBlockRetryCap)
+        b.kv("review_loop_max_cycles", cfg.orchestration.reviewLoopMaxCycles)
         b.kv("default_max_refinement", cfg.orchestration.defaultMaxRefinement)
         b.kv("recovery_route_budget", cfg.orchestration.recoveryRouteBudget)
         b.kv("intent_route_budget", cfg.orchestration.intentRouteBudget)