feat(tasks): full REST surface for tasks

CRUD, lifecycle transitions, work-graph links and notes over /tasks;
share link-kind inference (TaskTargetKinds) between the REST route and
task_update tool. End-to-end route tests.

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

infrastructure/tools/src/main/kotlin/com/correx/infrastructure/tools/task/TaskUpdateTool.kt

@@ -7,6 +7,7 @@ import com.correx.core.events.types.TaskLinkType
 import com.correx.core.events.types.TaskNoteAuthor
 import com.correx.core.events.types.TaskTargetKind
 import com.correx.core.tasks.TaskService
+import com.correx.core.tasks.TaskTargetKinds
 import com.correx.core.tools.contract.Tool
 import com.correx.core.tools.contract.ToolCapability
 import com.correx.core.tools.contract.ToolExecutor
@@ -20,8 +21,6 @@ import kotlinx.serialization.json.buildJsonObject
 import kotlinx.serialization.json.put
 import kotlinx.serialization.json.putJsonObject
 
-private val ADR_ID = Regex("(?i)^adr[-_ ]?\\d+$")
-
 /**
  * Agent-facing tool: update an existing task — edit fields, transition status, add a work-graph
  * link, or attach a note. The task's project is derived from its id, so only the id is required.
@@ -148,10 +147,7 @@ class TaskUpdateTool(private val service: TaskService) : Tool, ToolExecutor {
     /** Explicit kind when given (null if unrecognised); otherwise inferred from the target id. */
     private fun resolveTargetKind(raw: String?, target: String): TaskTargetKind? =
         if (raw != null) TaskTargetKind.entries.firstOrNull { it.name == raw.uppercase() }
-        else inferTargetKind(target)
-
-    private fun inferTargetKind(target: String): TaskTargetKind =
-        if (ADR_ID.matches(target) || target.endsWith(".md")) TaskTargetKind.DOC else TaskTargetKind.TASK
+        else TaskTargetKinds.infer(target)
 
     private fun fail(request: ToolRequest, reason: String): ToolResult.Failure =
         ToolResult.Failure(request.invocationId, reason, recoverable = false)