chore: remove task skill superseded by system prompt

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

task/SKILL.md

@@ -1,46 +0,0 @@
----
-name: task
-intent: plan, task, todo, steps, checklist, decompose, track
-description: Guidance on using task_plan and task_complete to decompose goals and track progress.
----
-
-# Task Planning
-
-Use `task_plan` to decompose a multi-step goal into an ordered checklist. Use `task_complete` to mark steps done as you finish them.
-
-## When to plan
-
-- The user asks you to do something with three or more distinct steps
-- The work spans multiple files, tools, or phases
-- You want to show the user a clear picture of what you're about to do before starting
-
-## Workflow
-
-1. Call `task_plan` to create the checklist
-2. Rename `__todo` → `__wip` when work begins (via `file_edit` or shell)
-3. Call `task_complete` after each step finishes
-4. Use `file_*` tools to add, remove, or revise steps as the plan evolves
-5. Rename `__wip` → `__done` when the goal is fully realized
-
-## How to use
-
-```
-execute_tool: task_plan  (or use the built-in task server directly)
-args: ["<goal>", "<step1>", "<step2>", ...]
-```
-
-```
-execute_tool: task_complete
-args: ["<plan-filename>", "<step-title-substring>"]
-```
-
-`task_complete` matches the step title case-insensitively and errors if no unchecked step matches — silent skips are caught.
-
-## Notes
-
-- Plan files live under `$OLLIE/pl/`
-- List plans: `execute_code` with `ls $OLLIE/pl/`
-- Inspect a plan: `execute_code` with `cat $OLLIE/pl/<file>`
-- Rename/move plans: `execute_code` with `mv $OLLIE/pl/<src> $OLLIE/pl/<dst>`
-- Bulk edits: `file_edit` or `execute_code`
-- `$OLLIE` is always set in the sandbox environment; use it instead of relative paths