#+TITLE: SKILL: Hook Manager (Universal Literate Note)
#+ID: skill-hook-manager
#+STARTUP: content
#+FILETAGS: :hooks:event-driven:system:psf:

* Overview
The *Hook Manager* enables event-driven extensibility within the agent by allowing functions to be registered and executed at specific lifecycle points.

* Phase A: Demand (PRD)
:PROPERTIES:
:STATUS: FROZEN
:END:

** 1. Purpose
Provide a hook-based event system.

** 2. User Needs
- *Registration:* Register functions to be called on specific hooks.
- *Execution:* Trigger all registered functions for a given hook.

* Phase B: Blueprint (PROTOCOL)
:PROPERTIES:
:STATUS: SIGNED
:END:

** 1. Architectural Intent
Event-driven extension system.

** 2. Semantic Interfaces
#+begin_src lisp
(defun register-hook (hook-name fn) "Register FN on HOOK-NAME.")
(defun run-hooks (hook-name &rest args) "Run all functions on HOOK-NAME with ARGS.")
#+end_src

* Phase D: Build (Implementation)

#+begin_src lisp :tangle ../projects/org-skill-hook-manager/src/hook-manager.lisp
(defvar *hooks* (make-hash-table :test 'equal))

(defun register-hook (hook-name fn)
  "Registers a function FN for the given HOOK-NAME."
  (pushnew fn (gethash hook-name *hooks*))
  (kernel-log "HOOK - Registered function for ~a" hook-name))

(defun run-hooks (hook-name &rest args)
  "Executes all registered functions for HOOK-NAME with ARGS."
  (let ((fns (gethash hook-name *hooks*)))
    (dolist (fn fns)
      (apply fn args))))
#+end_src

* Registration
#+begin_src lisp
(defskill :skill-hook-manager
  :priority 100
  :trigger (lambda (context) nil)
  :neuro (lambda (context) nil)
  :symbolic (lambda (action context) action))
#+end_src