feat(config): relocate orchestration loop/threshold/budget constants to [orchestration] config

The kernel's ReAct-loop tuning constants (max tool rounds, read/rejection-loop
nudge thresholds, feedback issue cap, repo-map top-k/files-per-dir, docs catalog
cap, clarification-round cap, review-block confidence/retry cap, default
refinement, recovery/intent route budgets) were hardcoded in SessionOrchestrator/
DefaultSessionOrchestrator. Relocated to a new OrchestrationTuning value threaded
through the orchestrator constructor, mapped from CorrexConfig.orchestration in
Main.kt, parsed in ConfigLoader, written by CorrexConfigWriter. Defaults equal the
former constants so an absent [orchestration] section reproduces prior behavior.

Startup-load (not hot-reload); pure output-truncation caps left as constants.

Vikunja #46 (task 76).

apps/server/src/main/kotlin/com/correx/apps/server/Main.kt

@@ -34,6 +34,7 @@ import com.correx.core.inference.ModelCapability
 import com.correx.core.kernel.orchestration.DefaultOrchestrationReducer
 import com.correx.core.kernel.orchestration.DefaultSessionOrchestrator
 import com.correx.core.kernel.orchestration.OrchestrationConfig
+import com.correx.core.kernel.orchestration.OrchestrationTuning
 import com.correx.core.kernel.orchestration.OrchestrationProjector
 import com.correx.core.kernel.orchestration.OrchestrationRepository
 import com.correx.core.kernel.orchestration.OrchestratorEngines
@@ -389,6 +390,27 @@ fun main() {
         toolRegistry.all().map { it.name }.toSet(),
         injectRecovery = true,
     )
+    // Startup-load orchestration tuning from the [orchestration] config section into the kernel's
+    // OrchestrationTuning. ponytail: read once at boot — a config edit needs a restart to take effect
+    // (unlike stage_timeout_ms, which ServerModule re-reads per session). Add a supplier if these ever
+    // need hot-reload.
+    val orchestrationTuning = with(correxConfig.orchestration) {
+        OrchestrationTuning(
+            maxToolRounds = maxToolRounds,
+            readLoopNudgeThreshold = readLoopNudgeThreshold,
+            rejectionLoopNudgeThreshold = rejectionLoopNudgeThreshold,
+            maxFeedbackIssues = maxFeedbackIssues,
+            repoMapInjectTopK = repoMapInjectTopK,
+            repoMapFilesPerDir = repoMapFilesPerDir,
+            docsCatalogMax = docsCatalogMax,
+            maxClarificationRounds = maxClarificationRounds,
+            reviewBlockMinConfidence = reviewBlockMinConfidence,
+            reviewBlockRetryCap = reviewBlockRetryCap,
+            defaultMaxRefinement = defaultMaxRefinement,
+            recoveryRouteBudget = recoveryRouteBudget,
+            intentRouteBudget = intentRouteBudget,
+        )
+    }
     val orchestrator = DefaultSessionOrchestrator(
         repositories = repositories,
         engines = engines.copy(
@@ -424,6 +446,7 @@ fun main() {
                 taskSessionResolver,
             ),
         ),
+        tuning = orchestrationTuning,
     )
     val workflowRegistry = FileSystemWorkflowRegistry(
         InfrastructureModule.createWorkflowLoader(configArtifactKindsEarly),