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memex/notes/org-skill-cron.org

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#+TITLE: SKILL: Cron Agent (Universal Literate Note)
#+ID: skill-cron
#+STARTUP: content
#+FILETAGS: :cron:temporal:heartbeat:psf:
* Overview
The *Cron Agent* serves as the system's temporal conscience. It provides autonomous, time-aware capabilities by hooking into the background heartbeat, enabling proactive executive assistance.
* Phase A: Demand (PRD)
:PROPERTIES:
:STATUS: FROZEN
:END:
** 1. Purpose
Define automated behaviors for deadline monitoring and temporal alerting.
** 2. User Needs
- *Punctuality:* Monitor deadlines and alerts across the Memex.
- *Efficiency:* Symbolic filtering (System 2) to minimize LLM calls.
- *Multi-Channel Awareness:* Routing alerts to Emacs or external delivery.
** 3. Success Criteria
*** TODO Heartbeat Trigger Verification
*** TODO Timestamp Parsing Accuracy
*** TODO Overdue Task Detection
* Phase B: Blueprint (PROTOCOL)
:PROPERTIES:
:STATUS: SIGNED
:END:
** 1. Architectural Intent
Interfaces for temporal perception and task auditing. Source of truth is the current system time and Org timestamps.
** 2. Semantic Interfaces
#+begin_src lisp
(defun trigger-skill-cron (context)
"Triggers on :sensor :heartbeat.")
(defun parse-org-timestamp (ts-str)
"Converts Org timestamp string to machine-comparable format.")
(defun neuro-skill-cron (context)
"Neural drafting of alerts for overdue tasks.")
#+end_src
* Phase D: Build (Implementation)
** Heartbeat Perception
#+begin_src lisp :tangle projects/org-skill-cron/src/cron-logic.lisp
(defun trigger-skill-cron (context)
(let ((type (getf context :type))
(payload (getf context :payload)))
(when (and (eq type :EVENT) (eq (getf payload :sensor) :heartbeat))
;; Side-effect: Check if it's time for the nightly grooming cycle
(trigger-nightly-grooming)
t))) ; Return T to trigger the skill
#+end_src
** Temporal Parsing & Nightly Cycle
#+begin_src lisp :tangle projects/org-skill-cron/src/cron-logic.lisp
(defun parse-org-timestamp (ts-str)
(let ((match (nth-value 1 (cl-ppcre:scan-to-strings "<(\\d{4})-(\\d{2})-(\\d{2}).*>" ts-str))))
(if match
(encode-universal-time 0 0 0
(parse-integer (aref match 2))
(parse-integer (aref match 1))
(parse-integer (aref match 0)))
nil)))
(defun trigger-nightly-grooming ()
"Checks if the current time is within the nightly grooming window (e.g., 3:00 AM - 4:00 AM).
If so, and it hasn't run today, it injects a grooming stimulus."
(let* ((now (local-time:now))
(hour (local-time:timestamp-hour now)))
(when (= hour 3) ; 3 AM
(kernel-log "CRON - Initiating Nightly Grooming Cycle...")
(org-agent:inject-stimulus `(:type :EVENT :payload (:sensor :grooming-cycle))))))
#+end_src
** Context Injection
#+begin_src lisp :tangle projects/org-skill-cron/src/cron-logic.lisp
"Retrieves all headlines with DEADLINE timestamps in the next N days.
Enables Temporal Context Injection for System 1."
(let* ((now (get-universal-time))
(future-limit (+ now (* days 24 60 60)))
(all-headlines (org-agent:list-objects-by-type :HEADLINE))
(upcoming nil))
(dolist (obj all-headlines)
(let* ((attrs (org-agent:org-object-attributes obj))
(deadline-str (getf attrs :DEADLINE))
(deadline-time (when deadline-str (parse-org-timestamp deadline-str))))
(when (and deadline-time (< deadline-time future-limit) (> deadline-time (- now 86400)))
(push (list :title (getf attrs :TITLE) :deadline deadline-str) upcoming))))
upcoming))
(defun context-get-stalled-waiting-items (&optional (days 3))
"Finds items marked WAITING that have not been updated in N days."
(let* ((now (get-universal-time))
(past-limit (- now (* days 24 60 60)))
(all-headlines (org-agent:list-objects-by-type :HEADLINE))
(stalled nil))
(dolist (obj all-headlines)
(let* ((attrs (org-agent:org-object-attributes obj))
(state (getf attrs :TODO-STATE))
(last-sync (org-agent:org-object-last-sync obj)))
(when (and (equal state "WAITING") (< last-sync past-limit))
(push (list :title (getf attrs :TITLE)) stalled))))
stalled))
#+end_src
** Neuro-Cognitive Intelligence
#+begin_src lisp :tangle projects/org-skill-cron/src/cron-logic.lisp
(defun neuro-skill-cron (context)
"Neural stage for temporal awareness.
Injects upcoming calendar events and stalled items into the cognitive loop."
(let* ((upcoming (context-get-upcoming-deadlines 3)) ; Look 3 days ahead
(stalled (context-get-stalled-waiting-items 3)) ; Look 3 days back
(now-str (local-time:format-timestring nil (local-time:now))))
(format nil "
CURRENT TIME: ~a
UPCOMING DEADLINES (Next 3 Days):
---
~{~a: ~a~%~}
---
STALLED WAITING ITEMS (> 3 days old):
---
~{~a~%~}
---
TASK:
If any deadline is CRITICAL or OVERDUE, propose a proactive alert or plan adjustment.
If there are stalled WAITING items, propose a follow-up action to unblock them.
" now-str
(loop for item in upcoming append (list (getf item :deadline) (getf item :title)))
(loop for item in stalled collect (getf item :title)))))
#+end_src
* Registration
#+begin_src lisp
(defskill :skill-cron
:priority 60
:trigger #'trigger-skill-cron
:neuro #'neuro-skill-cron
:symbolic (lambda (action context) action))
#+end_src