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-tui-state.org

@@ -0,0 +1,181 @@
+#+TITLE: Passepartout TUI — Model
+#+PROPERTY: header-args:lisp :tangle ../lisp/channel-tui-state.lisp
+
+* Model
+
+The TUI state is a single plist accessed via ~st~ / ~(setf st)~.
+All state mutation flows through event handlers in the controller.
+
+** Contract
+
+1. (init-state): returns a fresh state plist with ~:msgs~ list,
+   ~:input~ buffer, ~:dirty~ flag, ~:busy~ flag, and ~:connection~ status.
+2. (add-msg role content &key gate-trace): appends a message object
+   to the ~:messages~ vector (v0.3.3), tagged with timestamp, role,
+   and optional gate-trace from the daemon (v0.4.0).
+3. (queue-event ev): thread-safely enqueues an event for the
+   reader loop. (drain-queue) returns and clears the queue.
+
+** Package + State
+#+begin_src lisp
+(defpackage :passepartout.channel-tui
+  (:use :cl :croatoan :passepartout :usocket :bordeaux-threads)
+  (:export :tui-main :st :add-msg :now :input-string
+           :queue-event :drain-queue :init-state
+           :view-status :view-chat :view-input :redraw
+           :on-key :on-daemon-msg :send-daemon
+           :connect-daemon :disconnect-daemon
+           :*tui-theme* :theme-color))
+(in-package :passepartout.channel-tui)
+
+(defvar *state* nil)
+(defvar *event-queue* nil)
+(defvar *event-lock* (bt:make-lock "tui-event-lock"))
+
+(defvar *tui-theme*
+  ;; Roles
+  '(:user :green :agent :white :system :yellow
+    ;; Content
+    :input :cyan :timestamp :yellow :help :cyan :error :red :warning :yellow
+    ;; Status
+    :connected :green :disconnected :red :busy :magenta :idle :white
+    ;; Gate trace
+    :gate-passed :green :gate-blocked :red :gate-approval :yellow
+    ;; Tools (future use)
+    :tool-running :magenta :tool-success :green :tool-failure :red :tool-output :white
+    ;; Display
+    :scroll-indicator :cyan :border :white :background :black
+    ;; Differentiator (v0.4.0)
+    :rule-count :cyan :focus-map :yellow
+    ;; UI
+    :dim :white :highlight :cyan :accent :green)
+  "Color theme plist. 27 semantic keys → Croatoan color values.
+See *tui-theme-presets* for named presets (dark, light, solarized, gruvbox).")
+
+(defvar *tui-theme-presets*
+  '(:dark  (:user :green :agent :white :system :yellow
+            :input :cyan :timestamp :yellow :help :cyan :error :red :warning :yellow
+            :connected :green :disconnected :red :busy :magenta :idle :white
+            :gate-passed :green :gate-blocked :red :gate-approval :yellow
+            :tool-running :magenta :tool-success :green :tool-failure :red :tool-output :white
+            :scroll-indicator :cyan :border :white :background :black
+            :rule-count :cyan :focus-map :yellow
+            :dim :white :highlight :cyan :accent :green)
+    :light (:user :blue :agent :black :system :red
+            :input :black :timestamp :yellow :help :blue :error :red :warning :yellow
+            :connected :green :disconnected :red :busy :magenta :idle :black
+            :gate-passed :green :gate-blocked :red :gate-approval :yellow
+            :tool-running :magenta :tool-success :green :tool-failure :red :tool-output :black
+            :scroll-indicator :blue :border :black :background :white
+            :rule-count :blue :focus-map :red
+            :dim :white :highlight :blue :accent :green)
+    :gruvbox (:user "#458588" :agent "#ebdbb2" :system "#fabd2f"
+              :input "#ebdbb2" :timestamp "#928374" :help "#83a598" :error "#fb4934" :warning "#fabd2f"
+              :connected "#b8bb26" :disconnected "#fb4934" :busy "#d3869b" :idle "#a89984"
+              :gate-passed "#b8bb26" :gate-blocked "#fb4934" :gate-approval "#fabd2f"
+              :tool-running "#d3869b" :tool-success "#b8bb26" :tool-failure "#fb4934" :tool-output "#ebdbb2"
+              :scroll-indicator "#83a598" :border "#a89984" :background "#282828"
+              :rule-count "#83a598" :focus-map "#fabd2f"
+              :dim "#928374" :highlight "#83a598" :accent "#b8bb26")
+    :solarized (:user "#268bd2" :agent "#839496" :system "#b58900"
+                :input "#839496" :timestamp "#93a1a1" :help "#2aa198" :error "#dc322f" :warning "#b58900"
+                :connected "#859900" :disconnected "#dc322f" :busy "#d33682" :idle "#657b83"
+                :gate-passed "#859900" :gate-blocked "#dc322f" :gate-approval "#b58900"
+                :tool-running "#d33682" :tool-success "#859900" :tool-failure "#dc322f" :tool-output "#839496"
+                :scroll-indicator "#2aa198" :border "#657b83" :background "#002b36"
+                :rule-count "#2aa198" :focus-map "#b58900"
+                :dim "#586e75" :highlight "#2aa198" :accent "#859900"))
+  "Named theme presets. /theme <name> loads one into *tui-theme*.")
+
+(defvar *tui-theme-current-name* :dark
+  "Name of the currently active theme preset.")
+
+(defun theme-save ()
+  "Persist current theme to disk."
+  (let ((path (merge-pathnames ".cache/passepartout/theme.lisp"
+                               (user-homedir-pathname))))
+    (uiop:ensure-all-directories-exist (list path))
+    (with-open-file (out path :direction :output :if-exists :supersede :if-does-not-exist :create)
+      (format out ";; Passepartout TUI theme — auto-generated~%")
+      (format out "(setf passepartout.channel-tui::*tui-theme* '~s)~%" *tui-theme*)
+      (format out "(setf passepartout.channel-tui::*tui-theme-current-name* ~s)~%" *tui-theme-current-name*))
+    t))
+
+(defun theme-load ()
+  "Load persisted theme from disk. Called at startup."
+  (let ((path (merge-pathnames ".cache/passepartout/theme.lisp"
+                               (user-homedir-pathname))))
+    (when (uiop:file-exists-p path)
+      (ignore-errors (load path)))))
+
+(defun theme-switch (name)
+  "Switch to a named theme preset. Returns the preset name or nil if not found."
+  (let* ((key (intern (string-upcase (string name)) :keyword))
+         (preset (getf *tui-theme-presets* key)))
+    (when preset
+      (setf *tui-theme* (copy-list preset)
+            *tui-theme-current-name* key)
+      (theme-save)
+      (setf (st :dirty) (list t t t))
+      key)))
+
+(defun theme-color (role)
+  "Returns the Croatoan color for a semantic role."
+  (or (getf *tui-theme* role) :white))
+
+(defun st (key) (getf *state* key))
+(defun (setf st) (val key) (setf (getf *state* key) val))
+
+(defun init-state ()
+  (setf *state*
+        (list :running t :mode :chat :connected nil :stream nil
+              :input-buffer nil :input-history nil :input-hpos 0
+              :messages (make-array 16 :adjustable t :fill-pointer 0)
+              :scroll-offset 0 :busy nil :cursor-pos 0
+              :dirty (list nil nil nil))))
+#+end_src
+
+** Helpers
+#+begin_src lisp
+(defun now ()
+  (multiple-value-bind (s m h) (get-decoded-time)
+    (declare (ignore s))
+    (format nil "~2,'0d:~2,'0d" h m)))
+
+(defun input-string ()
+  (coerce (reverse (st :input-buffer)) 'string))
+
+(defun input-insert-char (ch)
+  "Insert character at cursor position into the input buffer."
+  (let* ((buf (st :input-buffer))
+         (pos (or (st :cursor-pos) 0))
+         (s (coerce (reverse buf) 'string))
+         (new (concatenate 'string (subseq s 0 pos) (string ch) (subseq s pos))))
+    (setf (st :input-buffer) (reverse (coerce new 'list)))
+    (setf (st :cursor-pos) (1+ pos))))
+
+(defun input-delete-char ()
+  "Delete character before cursor position (standard backspace)."
+  (let* ((buf (st :input-buffer))
+         (pos (or (st :cursor-pos) 0)))
+    (when (and buf (> pos 0))
+      (let* ((s (coerce (reverse buf) 'string))
+             (new (concatenate 'string (subseq s 0 (1- pos)) (subseq s pos))))
+        (setf (st :input-buffer) (reverse (coerce new 'list)))
+        (setf (st :cursor-pos) (1- pos))))))
+
+(defun add-msg (role content &key gate-trace)
+  (vector-push-extend (list :role role :content content :time (now) :gate-trace gate-trace) (st :messages))
+  (setf (st :dirty) (list t t nil)))
+#+end_src
+
+** Event Queue
+#+begin_src lisp
+(defun queue-event (ev)
+  (bt:with-lock-held (*event-lock*) (push ev *event-queue*)))
+
+(defun drain-queue ()
+  (bt:with-lock-held (*event-lock*)
+    (let ((evs (nreverse *event-queue*)))
+      (setf *event-queue* nil) evs)))
+#+end_src