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refactor(retrieval): one registry for every surface's floor and budget (#4102)
Groundwork for the step's real change. The operator's decision is that the
floor is chosen and adjusted by the model using it, not shipped as a value
somebody has to defend:

  "we need a model consistent surface for the adjustment of these floor values.
   the user should be able to touch it but the model should be the thing
   handling it 9 times out of 10."

A tuning surface cannot be consistent across six arms that each spell their
configuration differently, so the arms stop owning their numbers.
`retrieval_surfaces.SURFACES` names each one, its floor key and default, its
budget key and default, and — because they are rendered by the tuning tool and
the Settings UI — what it asks, over what corpus, and how often it fires. A
floor cannot be moved responsibly by anyone who does not know those three.

Three things fall out:

- **`k` becomes a real budget everywhere.** Only auto-inject had a configurable
  one; `RULEHINT_LIMIT`, `PROMPTRULE_LIMIT` and `reply_preferences.LIMIT` were
  constants. `k` is what binds under a low floor, so it has to be settable per
  surface — and per surface is the point, since `pre_tool_rule` fires before
  every Bash call while `prompt_rule` fires once a turn.
- **`write_path` gets its own budget, inherited not reset.** It shared
  auto-inject's outright on the argument that "how many titles at once" means
  the same thing on both. It does not, for the same reason. Unset, it still
  reads auto-inject's key, so an install that tuned the shared knob does not
  silently drop to a new default.
- **The duplicated read-and-clamp goes.** That shape is canon #2860 across 295
  of 372 judged siblings. Survivable while the numbers were constants; not once
  they are meant to move.

The long measurement comments stay exactly where they are — #2223's noise-floor
probe, #3853's command-vs-code split, #3851's band measurement. The constants
they annotate now alias the registry, so there is one value and the reasoning
still sits beside it.

Tests build the write-path config from the registry (`helpers.writepath_cfg`)
instead of from hand-written dicts. That is not tidiness: the rule arms read
their numbers inside a fail-open `except`, so a dict missing one key does not
raise where a reader would see it — the arm silently becomes a no-op that reads
exactly like "fired and found nothing". Ten hand-written dicts each looked
complete on the day they were typed.

tests/test_retrieval_surfaces.py pins the identity everything rests on: a
surface's name IS its telemetry source. Nothing in the type system says so —
`record_retrieval(source="pre_tool_rule")` is a literal in another file — and
renaming one without the other yields an arm that can be tuned and not
measured, or measured and not tuned, with no symptom either way.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01821k5B3Ysecp9fNYs92Kuy
2026-09-17 11:17:23 -04:00

Fabled Scribe

A self-hosted work system-of-record for software projects, built to be driven by Claude Code. Notes, tasks, issues, projects, milestones, rules, and stored processes — reachable from Claude via a built-in MCP endpoint and a bundled Claude Code plugin, with a clean web UI for humans. No in-app LLM; Claude is the sole assistant.

Features

Notes and tasks with a Markdown editor, sub-tasks, milestones, issues, and kanban project workspaces. Stored processes, an engineering rulebook system (with an inception step that decides what each project inherits), and semantic search with proactive knowledge-injection into Claude's context. A knowledge graph, per-user/group sharing, and a built-in MCP server (/mcp) plus a bundled Claude Code plugin so Claude can record and recall your work directly.

Quick Start

Prerequisites: Docker and Docker Compose. No GPU or local model needed — Claude is the sole assistant, reached over MCP.

Download docker-compose.quickstart.yml from this repo, then:

# Optional but recommended — set a secret key
export SECRET_KEY=your-random-secret-here

docker compose -f docker-compose.quickstart.yml up -d

Open http://localhost:5000. The first user to register becomes admin. To connect Claude, create an API key under Settings → API Keys and install the Claude Code plugin — see API Keys & MCP.

Development: To build from source, see Development.

Documentation

Doc Contents
Architecture Stack, design decisions, data models, key services
Configuration Environment variables, Docker Compose, production setup, security
Features Detailed feature breakdown and keyboard shortcuts
Development Dev workflow, CI/CD, migrations, release process
API Keys & MCP API key management and Fable MCP install guide
SSO / OAuth OIDC setup for Authentik, Keycloak, and other providers
API Reference All REST API endpoints

License

This project is privately maintained.

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