Amr Gharbeia
95d1ea3fed
- Add deepseek and nvidia entries to gateway-provider config - Add DEEPSEEK_API_KEY and NVIDIA_API_KEY to .env.example - Add deepseek and nvidia to doctor's LLM provider check - Fix remaining harness-log → log-message reference
268 lines
13 KiB
Org Mode
268 lines
13 KiB
Org Mode
#+TITLE: Context API (context.lisp)
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#+AUTHOR: Agent
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#+FILETAGS: :harness:context:
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#+STARTUP: content
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#+PROPERTY: header-args:lisp :tangle ../lisp/core-context.lisp
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* Overview: Architectural Intent
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The Context API implements the Foveal-Peripheral awareness model. When the agent thinks, it doesn't dump everything it knows into the LLM's context window — that would saturate the token budget immediately. Instead, it builds a skeletal outline of the entire Memex and only shows full detail for the current focus.
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This mirrors human attention: you are aware of your entire apartment (peripheral vision), but you only see the book in front of you in detail (foveal vision).
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** The Foveal-Peripheral Model
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Three factors determine how much detail an object gets:
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1. **Depth** — objects within 2 levels of the root get full outline (title + ID). Deeper objects are summarized or omitted.
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2. **Foveal focus** — the object the user is currently interacting with gets full content rendered.
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3. **Semantic similarity** — objects whose vector embedding is similar to the current foveal focus get promoted from peripheral to foveal detail.
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** Why Not Just Dump Everything?
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A naive implementation that serializes every ~org-object~ to text would produce hundreds of thousands of tokens for a typical knowledge base. The LLM would spend its attention budget on noise, not signal. The Foveal-Peripheral model preserves the signal (the current task and related information) while reducing noise (everything else).
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The semantic threshold is configurable via ~CONTEXT_SEMANTIC_THRESHOLD~ env var (default 0.75). Lower values include more peripherally related content; higher values restrict to tightly related content.
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* Implementation
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** Package Context
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#+begin_src lisp
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(in-package :passepartout)
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#+end_src
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** Memory Query (context-query)
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Filters the Memory store by tag, TODO state, or object type. This is the primary retrieval function used by skills to find relevant information.
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#+begin_src lisp
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(defun context-query (&key tag todo-state type)
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"Filters the Memory based on tags, todo states, or types."
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(let ((results nil))
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(maphash (lambda (id obj)
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(declare (ignore id))
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(let* ((attrs (org-object-attributes obj)) (state (getf attrs :TODO-STATE)) (match t))
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(when (and type (not (eq (org-object-type obj) type))) (setf match nil))
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(when tag (unless (search tag (format nil "~a" (getf attrs :TAGS)) :test #'string-equal) (setf match nil)))
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(when (and todo-state (not (equal state todo-state))) (setf match nil))
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(when match (push obj results))))
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*memory*)
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results))
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#+end_src
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** Active Projects (context-active-projects)
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Returns headlines tagged as ~project~ that are not yet DONE. Used by the global awareness function to build the task overview.
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#+begin_src lisp
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(defun context-active-projects ()
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"Returns headlines tagged as 'project' that are not yet marked DONE."
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(remove-if (lambda (obj) (equal (getf (org-object-attributes obj) :TODO-STATE) "DONE"))
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(context-query :tag "project" :type :HEADLINE)))
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#+end_src
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** Completed Tasks (context-recent-tasks)
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Retrieves recently finished tasks from the store. Used by the Scribe and Gardener for journal summarization.
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#+begin_src lisp
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(defun context-recent-tasks ()
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"Retrieves recently finished tasks from the store."
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(context-query :todo-state "DONE" :type :HEADLINE))
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#+end_src
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** Capability Discovery (context-skill-list)
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Provides a sorted overview of currently loaded system capabilities. Each entry includes the skill name, priority, and dependencies.
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#+begin_src lisp
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(defun context-skill-list ()
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"Provides a sorted overview of currently loaded system capabilities."
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(let ((results nil))
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(maphash (lambda (name skill)
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(declare (ignore name))
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(push (list :name (skill-name skill) :priority (skill-priority skill) :dependencies (skill-dependencies skill)) results))
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*skills-registry*)
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(sort results #'> :key (lambda (x) (getf x :priority)))))
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#+end_src
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** Skill Source Inspection (context-skill-source)
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Reads the raw literate source of a specific skill for inspection. Used when the agent needs to understand or modify its own code.
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#+begin_src lisp
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(defun context-skill-source (skill-name)
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"Reads the raw literate source of a specific skill for inspection."
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(let* ((filename (format nil "~a.org" skill-name))
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(data-dir (uiop:ensure-directory-pathname (or (uiop:getenv "PASSEPARTOUT_DATA_DIR") (namestring (merge-pathnames ".local/share/passepartout/" (user-homedir-pathname))))))
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(skills-dir (merge-pathnames "skills/" data-dir))
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(full-path (merge-pathnames filename skills-dir)))
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(if (uiop:file-exists-p full-path) (uiop:read-file-string full-path) nil)))
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#+end_src
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** Harness Logs (context-logs)
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Retrieves the most recent lines from the harness's internal log buffer. The log limit is configurable via ~CONTEXT_LOG_LIMIT~ env var (default 20).
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#+begin_src lisp
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(defun context-logs (&optional limit)
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"Retrieves the most recent lines from the harness's internal log."
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(let ((log-limit (or limit (ignore-errors (parse-integer (uiop:getenv "CONTEXT_LOG_LIMIT"))) 20)))
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(bt:with-lock-held (*logs-lock*)
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(let ((count (min log-limit (length *system-logs*))))
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(subseq *system-logs* 0 count)))))
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#+end_src
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** AST to Org Rendering (context-object-render)
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Recursively renders an ~org-object~ and its children to an Org-mode string, applying the Foveal-Peripheral model:
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- Objects within depth 2 are always included (outline)
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- The foveal object (the one the user is looking at) is always included with full content
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- Objects with semantic similarity above the threshold are included with full content
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- All other objects are omitted silently
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This function is the heart of the context assembly. Its performance directly affects the agent's response time.
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#+begin_src lisp
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(defun context-object-render (obj &key (depth 1) (foveal-id nil) semantic-threshold (foveal-vector nil))
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"Recursively renders an org-object and its children to an Org string using a Foveal-Peripheral Hybrid model."
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(let* ((id (org-object-id obj))
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(is-foveal (equal id foveal-id))
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(title (or (getf (org-object-attributes obj) :TITLE) "Untitled"))
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(content (org-object-content obj))
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(children (org-object-children obj))
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(stars (make-string depth :initial-element #\*))
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(obj-vector (org-object-vector obj))
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(threshold (or semantic-threshold (ignore-errors (read-from-string (uiop:getenv "CONTEXT_SEMANTIC_THRESHOLD"))) 0.75))
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(similarity (if (and foveal-vector obj-vector (not is-foveal))
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(cosine-similarity foveal-vector obj-vector)
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0.0))
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(is-semantically-relevant (>= similarity threshold))
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(should-render (or (<= depth 2) is-foveal is-semantically-relevant))
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(output ""))
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(when should-render
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(setf output (format nil "~a ~a~%:PROPERTIES:~%:ID: ~a~%" stars title id))
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(when is-semantically-relevant
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(setf output (concatenate 'string output (format nil ":SEMANTIC_SCORE: ~,2f~%" similarity))))
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(setf output (concatenate 'string output (format nil ":END:~%")))
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(when (and content (or is-foveal is-semantically-relevant))
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(setf output (concatenate 'string output content (string #\Newline))))
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(dolist (child-id children)
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(let ((child-obj (lookup-object child-id)))
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(when child-obj
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(let ((next-foveal (if is-foveal child-id foveal-id)))
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(setf output (concatenate 'string output
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(context-object-render child-obj
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:depth (1+ depth)
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:foveal-id next-foveal
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:semantic-threshold threshold
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:foveal-vector foveal-vector))))))))
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output))
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#+end_src
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** Path Resolution (context-path-resolve)
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Expands environment variables in a path string and strips quotes. Used to resolve configurable paths from ~.env~.
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#+begin_src lisp
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(defun context-path-resolve (path-string)
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"Expands environment variables and strips literal quotes from a path string."
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(let ((path (if (stringp path-string)
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(string-trim '(#\" #\' #\Space) path-string)
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path-string)))
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(if (and (stringp path) (search "$" path))
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(let ((result path))
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(ppcre:do-register-groups (var-name) ("\\$([A-Za-z0-9_]+)" path)
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(let ((var-val (uiop:getenv var-name)))
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(when var-val
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(setf result (ppcre:regex-replace (format nil "\\$~a" var-name) result var-val)))))
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result)
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path)))
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#+end_src
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** Privacy Filter for Context Assembly
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Checks if an org-object has tags matching the Bouncer's ~bouncer-privacy-tags~. Objects with matching tags are excluded from the LLM's context window. This prevents private content tagged with ~@personal~ (or any user-configured privacy tag) from being included in prompts sent to external LLM providers.
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#+begin_src lisp
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(defun context-privacy-filtered-p (obj)
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"Returns T if an org-object's :TAGS attribute matches bouncer-privacy-tags."
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(let* ((attrs (org-object-attributes obj))
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(tags (getf attrs :TAGS))
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(privacy-tags (and (find-package :passepartout.security-dispatcher)
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(symbol-value
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(find-symbol "BOUNCER-PRIVACY-TAGS"
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:passepartout.security-dispatcher)))))
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(when (and tags privacy-tags)
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(let ((tag-list (if (listp tags) tags (list tags))))
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(some (lambda (tag)
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(some (lambda (private)
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(string-equal (string-trim '(#\:) tag)
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(string-trim '(#\:) private)))
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privacy-tags))
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tag-list)))))
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#+end_src
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** Global Awareness (context-awareness-assemble)
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Produces the high-level skeletal outline of the current Memory that is included in every LLM call. This is the "peripheral vision" of the agent — it knows what projects exist, their titles and IDs, but not their full content.
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Privacy-filtered projects (those with tags matching ~bouncer-privacy-tags~) are excluded from the output.
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#+begin_src lisp
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(defun context-awareness-assemble (&optional signal)
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"Produces a high-level skeletal outline of the current Memory for the LLM.
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Privacy-filtered objects (matching bouncer-privacy-tags) are excluded."
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(let* ((foveal-id (or (getf signal :foveal-focus)
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(ignore-errors (getf (getf signal :payload) :target-id))))
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(all-projects (context-active-projects))
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(projects (remove-if #'context-privacy-filtered-p all-projects))
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(output (format nil "GLOBAL MEMEX AWARENESS (Peripheral Vision):~%")))
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(if projects
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(dolist (project projects)
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(setf output (concatenate 'string output
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(context-object-render project :foveal-id foveal-id))))
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(setf output (concatenate 'string output "No active projects found.~%")))
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output))
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#+end_src
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* Test Suite
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Verifies that the Foveal-Peripheral rendering correctly distinguishes between foveal (detailed) and peripheral (outline) content, and that the awareness budget includes all active projects.
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#+begin_src lisp :tangle ../lisp/core-context.lisp
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(eval-when (:compile-toplevel :load-toplevel :execute)
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(ql:quickload :fiveam :silent t))
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(defpackage :passepartout-peripheral-vision-tests
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(:use :cl :fiveam :passepartout)
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(:export #:vision-suite))
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(in-package :passepartout-peripheral-vision-tests)
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(def-suite vision-suite :description "Verification of Foveal-Peripheral context model.")
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(in-suite vision-suite)
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(test test-foveal-rendering
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(clrhash passepartout::*memory*)
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(let* ((ast '(:type :HEADLINE :properties (:ID "proj-root" :TITLE "Project" :TAGS ("project"))
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:contents ((:type :HEADLINE :properties (:ID "node-foveal" :TITLE "Foveal Node")
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:raw-content "FOVEAL CONTENT" :contents nil)
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(:type :HEADLINE :properties (:ID "node-peripheral" :TITLE "Peripheral Node")
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:raw-content "PERIPHERAL CONTENT" :contents nil)))))
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(ingest-ast ast)
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(let ((output (context-awareness-assemble (list :foveal-focus "node-foveal"))))
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(is (search "FOVEAL CONTENT" output))
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(is (search "* Peripheral Node" output))
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(is (not (search "PERIPHERAL CONTENT" output))))))
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(test test-awareness-budget
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(clrhash passepartout::*memory*)
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(ingest-ast '(:type :HEADLINE :properties (:ID "p1" :TITLE "Project 1" :TAGS ("project")) :contents nil))
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(ingest-ast '(:type :HEADLINE :properties (:ID "p2" :TITLE "Project 2" :TAGS ("project")) :contents nil))
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(let ((output (context-awareness-assemble)))
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(is (search "Project 1" output))
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(is (search "Project 2" output))))
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#+end_src
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