Add task show command for detailed task inspection

- Implemented 'task show <id>' command with human-readable output -
Shows all task fields: title, type, status, priority, timestamps -
Displays dependencies with their types - Supports --json flag for
programmatic use - Added CLI tests for show command - Includes priority
descriptions (Critical/High/Medium/Low/Backlog)

2 files changed, 62 insertions, 0 deletions

diff --git a/Omni/Task.hs b/Omni/Task.hs
index e3f89dc..656c972 100644
--- a/Omni/Task.hs
+++ b/Omni/Task.hs
@@ -41,6 +41,7 @@ Usage:
   task create <title> [--type=<type>] [--parent=<id>] [--priority=<p>] [--deps=<ids>] [--dep-type=<type>] [--discovered-from=<id>] [--namespace=<ns>] [--json]
   task list [--type=<type>] [--parent=<id>] [--status=<status>] [--namespace=<ns>] [--json]
   task ready [--json]
+  task show <id> [--json]
   task update <id> <status> [--json]
   task deps <id> [--json]
   task tree [<id>] [--json]
@@ -55,6 +56,7 @@ Commands:
   create                        Create a new task or epic
   list                          List all tasks
   ready                         Show ready tasks (not blocked)
+  show                          Show detailed task information
   update                        Update task status
   deps                          Show dependency tree
   tree                          Show task tree (epics with children, or all epics if no ID given)
@@ -186,6 +188,15 @@ move args
         else do
           putText "Ready tasks:"
           traverse_ printTask tasks
+  | args `Cli.has` Cli.command "show" = do
+      tid <- getArgText args "id"
+      tasks <- loadTasks
+      case filter (\t -> taskId t == tid) tasks of
+        [] -> putText "Task not found"
+        (task : _) ->
+          if isJsonMode args
+            then outputJson task
+            else showTaskDetailed task
   | args `Cli.has` Cli.command "update" = do
       tid <- getArgText args "id"
       statusStr <- getArgText args "status"
@@ -424,6 +435,20 @@ cliTests =
             args `Cli.has` Cli.command "import" Test.@?= True
             -- Note: -i is a short option, not an argument
             Cli.getArg args (Cli.shortOption 'i') Test.@?= Just "tasks.jsonl",
+      Test.unit "show command" <| do
+        let result = Docopt.parseArgs help ["show", "t-abc123"]
+        case result of
+          Left err -> Test.assertFailure <| "Failed to parse 'show': " <> show err
+          Right args -> do
+            args `Cli.has` Cli.command "show" Test.@?= True
+            Cli.getArg args (Cli.argument "id") Test.@?= Just "t-abc123",
+      Test.unit "show with --json flag" <| do
+        let result = Docopt.parseArgs help ["show", "t-abc123", "--json"]
+        case result of
+          Left err -> Test.assertFailure <| "Failed to parse 'show --json': " <> show err
+          Right args -> do
+            args `Cli.has` Cli.command "show" Test.@?= True
+            args `Cli.has` Cli.longOption "json" Test.@?= True,
       Test.unit "sync command" <| do
         let result = Docopt.parseArgs help ["sync"]
         case result of
diff --git a/Omni/Task/Core.hs b/Omni/Task/Core.hs
index 6c472c5..1dc31a8 100644
--- a/Omni/Task/Core.hs
+++ b/Omni/Task/Core.hs
@@ -373,6 +373,43 @@ printTask t =
       Nothing -> ""
       Just ns -> " [" <> ns <> "]"
 
+-- Show detailed task information (human-readable)
+showTaskDetailed :: Task -> IO ()
+showTaskDetailed t = do
+  putText "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+  putText <| "Task: " <> taskId t
+  putText "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+  putText <| "Title:      " <> taskTitle t
+  putText <| "Type:       " <> T.pack (show (taskType t))
+  putText <| "Status:     " <> T.pack (show (taskStatus t))
+  putText <| "Priority:   " <> T.pack (show (taskPriority t)) <> priorityDesc
+  case taskParent t of
+    Nothing -> pure ()
+    Just p -> putText <| "Parent:     " <> p
+  case taskNamespace t of
+    Nothing -> pure ()
+    Just ns -> putText <| "Namespace:  " <> ns
+  putText <| "Created:    " <> T.pack (show (taskCreatedAt t))
+  putText <| "Updated:    " <> T.pack (show (taskUpdatedAt t))
+
+  -- Show dependencies
+  unless (null (taskDependencies t)) <| do
+    putText ""
+    putText "Dependencies:"
+    traverse_ printDependency (taskDependencies t)
+
+  putText "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+  where
+    priorityDesc = case taskPriority t of
+      P0 -> " (Critical)"
+      P1 -> " (High)"
+      P2 -> " (Medium)"
+      P3 -> " (Low)"
+      P4 -> " (Backlog)"
+
+    printDependency dep =
+      putText <| "  - " <> depId dep <> " [" <> T.pack (show (depType dep)) <> "]"
+
 -- Export tasks: Consolidate JSONL file (remove duplicates, keep latest version)
 exportTasks :: IO ()
 exportTasks = do