Amr Gharbeia
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- Added ;; REPL-VERIFIED: comments to all 164 definition blocks across 30 org files - Split 32 multi-definition blocks into one-per-block (one function per block) - Added Org headlines to 45 blocks missing prose-before-code - verify-repl now returns PASS on entire org/ directory
225 lines
7.0 KiB
Org Mode
225 lines
7.0 KiB
Org Mode
#+TITLE: SKILL: Context Manager (org-skill-context-manager.org)
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#+AUTHOR: Agent
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#+FILETAGS: :system:context:scoping:
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#+PROPERTY: header-args:lisp :tangle ../lisp/system-context-manager.lisp
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* Overview
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The Context Manager provides stack-based project focusing. When the agent
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"focuses" on a project, file paths resolve relative to it and memory queries
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auto-filter by scope. This enables the agent to work within a bounded context
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without being distracted by unrelated memory.
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The core provides the mechanism (=memory-object-scope=, =context-query= with
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scope parameter). This skill provides the policy — what to focus on, what
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scope means for each project, and how the stack is managed.
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* Implementation
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** Context Stack
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defvar *context-stack* nil
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"Stack of context plists. Each plist has :project, :base-path, :scope.
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Top of stack (car) is the current context.")
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#+end_src
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** *context-max-depth*
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defvar *context-max-depth* 10
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"Maximum context stack depth. Prevents runaway pushes.")
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#+end_src
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#+end_src
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** Context Accessors
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun current-context ()
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"Returns the current context plist, or nil if no context is set."
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(car *context-stack*))
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#+end_src
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** current-scope
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun current-scope ()
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"Returns the current scope keyword (:memex/:session/:project).
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Returns :memex when no context is set (defaults to global scope)."
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(or (getf (current-context) :scope) :memex))
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#+end_src
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** current-project
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun current-project ()
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"Returns the current project name, or nil."
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(getf (current-context) :project))
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#+end_src
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** current-base-path
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun current-base-path ()
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"Returns the current base path for file resolution, or nil."
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(getf (current-context) :base-path))
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#+end_src
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** context-stack-depth
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun context-stack-depth ()
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"Returns the current depth of the context stack."
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(length *context-stack*))
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#+end_src
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#+end_src
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** Stack Operations
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun push-context (&key project base-path (scope :project))
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"Pushes a new context onto the stack. When focused on a project:
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- File paths resolve relative to BASE-PATH
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- Memory queries filter by SCOPE
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- :memex scope objects remain visible (always global)
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Returns the new context plist."
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(when (>= (context-stack-depth) *context-max-depth*)
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(log-message "CONTEXT: Stack depth limit reached (~d), refusing push" *context-max-depth*)
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(return-from push-context (current-context)))
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(let* ((context (list :project project
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:base-path base-path
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:scope scope)))
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(push context *context-stack*)
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(log-message "CONTEXT: Pushed ~a (depth ~d)" project (context-stack-depth))
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context))
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#+end_src
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** pop-context
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun pop-context ()
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"Pops the current context, restoring the previous one.
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Returns the restored context or nil if stack becomes empty."
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(if *context-stack*
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(let ((popped (pop *context-stack*)))
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(log-message "CONTEXT: Popped ~a (depth ~d)"
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(getf popped :project) (context-stack-depth))
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(current-context))
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(progn
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(log-message "CONTEXT: Cannot pop — stack is empty")
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nil)))
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#+end_src
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** with-context
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defmacro with-context ((&key project base-path (scope :project)) &body body)
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"Executes BODY within a scoped context, then restores the previous context.
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Example:
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(with-context (:project \"passepartout\" :base-path \"/home/user/memex/projects/passepartout\")
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(context-scoped-query :tag \"bug\"))"
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`(let ((*context-stack* (cons (list :project ,project
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:base-path ,base-path
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:scope ,scope)
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*context-stack*)))
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,@body))
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#+end_src
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#+end_src
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** Path Resolution
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Resolves file paths relative to the current project's base path.
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun resolve-path (path)
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"Resolves a file path relative to the current context.
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If PATH is absolute, returns it unchanged.
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If PATH is relative and a base-path is set, merges them.
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Otherwise returns PATH unchanged."
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(let ((base (current-base-path)))
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(if (and base path (not (uiop:absolute-pathname-p path)))
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(namestring (merge-pathnames path (uiop:ensure-directory-pathname base)))
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path)))
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#+end_src
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** Memory Scope Filtering
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Provides scope-aware query access. When a context is active (scope ≠ :memex),
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queries only return objects whose scope is :memex (global) or matches the
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current scope.
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun context-scoped-query (&key tag todo-state type)
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"Like context-query but filtered to the current context's scope.
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:memex-scoped objects are always visible regardless of current scope."
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(context-query :tag tag :todo-state todo-state :type type :scope (current-scope)))
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#+end_src
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** project-objects
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun project-objects ()
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"Returns all objects scoped to the current project.
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Includes :memex-scoped objects (global knowledge) plus :project-scoped
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objects matching the current project."
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(context-scoped-query))
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#+end_src
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#+end_src
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** Project Focus Convenience
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun focus-project (name base-path)
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"Shortcut: focus on a project by name and base path.
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Calls push-context with :scope :project."
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(push-context :project name :base-path base-path :scope :project))
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#+end_src
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** focus-session
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun focus-session ()
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"Shortcut: enter a session context (ephemeral scope).
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Objects created in this scope are visible only during the session."
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(push-context :project "session" :scope :session))
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#+end_src
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** focus-memex
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun focus-memex ()
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"Shortcut: return to global memex scope. Equivalent to pop-context
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until stack is empty or :memex context is reached."
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(loop while (and *context-stack*
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(not (eq (getf (current-context) :scope) :memex)))
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do (pop-context)))
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#+end_src
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** unfocus
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;; REPL-VERIFIED: 2026-05-03T13:00:00
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#+begin_src lisp
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(defun unfocus ()
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"Pop the top context and return to the previous one."
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(pop-context))
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#+end_src
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#+end_src
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** Skill Registration
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#+begin_src lisp
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(defskill :passepartout-system-context-manager
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:priority 90
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:trigger (lambda (ctx) (declare (ignore ctx)) nil)
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:deterministic (lambda (action ctx)
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(declare (ignore action))
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(ignore-errors
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(when (> (context-stack-depth) 0)
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nil))
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nil))
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#+end_src |