passepartout: v0.5.0 File Reorganization

Extract non-core fragments using self-repair criterion:
- core-context -> symbolic-awareness (224 lines, fboundp guards in think())
- heartbeat generation -> symbolic-events (renamed events-start-heartbeat)

Rename 23 files for clarity and new naming scheme:
- 6 core: core-package, core-transport, core-pipeline,
          core-perceive, core-reason, core-act
- 13 system: symbolic-*, neuro-*, embedding-*, channel-shell
- 4 gateway: channel-cli, channel-tui-*, channel-tui-state

Utility relocations:
- markdown-strip -> programming-markdown
- plist-keywords-normalize -> programming-lisp
- cognitive-tool-prompt -> programming-tools
- VAULT-MEMORY -> security-vault
- Merge *backend-registry* into *probabilistic-backends*

Split gateway-messaging into channel-telegram/channel-signal/
channel-discord/channel-slack (4 independent skills)

Delete dead system-model.lisp (16-line wrapper)

Document self-repair criterion in DESIGN_DECISIONS

Version bump: 0.4.3 -> 0.5.0

org/channel-telegram.org

@@ -0,0 +1,63 @@
+#+TITLE: Channel Telegram (channel-telegram.org)
+#+AUTHOR: Agent
+#+FILETAGS: :channel:telegram:
+#+PROPERTY: header-args:lisp :tangle ../lisp/channel-telegram.lisp
+
+* Channel Telegram
+
+Extracted from gateway-messaging in v0.5.0. Isolated platform — Telegram-specific poll and send logic.
+
+* Implementation
+
+#+begin_src lisp
+(in-package :passepartout)
+(defun telegram-get-token ()
+  (vault-get-secret :telegram))
+
+(defun telegram-poll ()
+  "Polls Telegram for new messages and injects them into the harness."
+  (let* ((token (telegram-get-token)))
+    (when token
+      (let* ((last-id (getf (gethash "telegram" *gateway-configs*) :last-update-id 0))
+             (url (format nil "https://api.telegram.org/bot~a/getUpdates?offset=~a"
+                          token (1+ last-id))))
+        (handler-case
+            (let* ((response (dex:get url))
+                   (json (cl-json:decode-json-from-string response))
+                   (updates (cdr (assoc :result json))))
+              (dolist (update updates)
+                (let* ((update-id (cdr (assoc :update--id update)))
+                       (message (cdr (assoc :message update)))
+                       (chat (cdr (assoc :chat message)))
+                       (chat-id (cdr (assoc :id chat)))
+                       (text (cdr (assoc :text message))))
+                  (setf (getf (gethash "telegram" *gateway-configs*) :last-update-id) update-id)
+                  (when (and text chat-id)
+                    (log-message "TELEGRAM: Received message from ~a" chat-id)
+                    (unless (ignore-errors (hitl-handle-message text :telegram))
+                      (stimulus-inject
+                       (list :type :EVENT
+                             :meta (list :source :telegram :chat-id (format nil "~a" chat-id))
+                             :payload (list :sensor :user-input :text text))))))))
+          (error (c) (log-message "TELEGRAM POLL ERROR: ~a" c)))))))
+
+(defun telegram-send (action context)
+  "Sends a message via Telegram."
+  (declare (ignore context))
+  (let* ((payload (getf action :payload))
+         (meta (getf action :meta))
+         (chat-id (or (getf meta :chat-id) (getf payload :chat-id) (getf action :chat-id)))
+         (text (or (getf payload :text) (getf action :text)))
+         (token (telegram-get-token)))
+    (when (and token chat-id text)
+      (handler-case
+          (let ((url (format nil "https://api.telegram.org/bot~a/sendMessage" token)))
+            (dex:post url
+                      :headers '(("Content-Type" . "application/json"))
+                      :content (cl-json:encode-json-to-string
+                                `((chat_id . ,chat-id) (text . ,text)))))
+        (error (c) (log-message "TELEGRAM ERROR: ~a" c))))))
+#+end_src
+
+
+#+end_src