Clean up legacy code and artifacts

CONTEXT.md

@@ -21,7 +21,7 @@ Both approaches are planned and partially implemented. The SDK path is fully fun
 |------|-------------|---------|
 | Knowledge Engine | KE | The distributed network/platform that enables knowledge exchange between applications |
 | Knowledge Directory | KD | Central service that matches and routes knowledge interactions between Smart Connectors |
-| Smart Connector | SC | A Java runtime process (usually in a container) that acts as a broker between a KB and the KE network; exposes a REST API |
+| Smart Connector | SC | Central service where participants register and that participants query for other participants in the network |
 | Knowledge Base | KB | A user's application that holds or requests knowledge; connects to the KE network via a Smart Connector |
 | Knowledge Interaction | KI | A declared intent to exchange knowledge — either to provide it (ANSWER/REACT) or request it (ASK/POST) |
 | Binding Set | BS | A list of dictionaries mapping SPARQL variable names to RDF N3-encoded values |
@@ -93,9 +93,6 @@ examples/
     settings.yaml              # Example YAML config for all four KI types
   shared.py                    # Example logging helper
   compose.yaml                 # Docker Compose for running two SC instances for examples/testing
-  legacy/                      # ← IGNORE: pre-overhaul examples, do not modify
-
-src/legacy/                    # ← IGNORE: pre-overhaul implementation, do not modify
 
 tests/
   test_ask_and_post.py
@@ -397,7 +394,7 @@ uv run pytest
 
 - **Python**: ≥ 3.13
 - **Package manager**: `uv` (see `uv.lock`)
-- **Linter/formatter**: `ruff` (configured in `pyproject.toml`, legacy dirs excluded)
+- **Linter/formatter**: `ruff` (configured in `pyproject.toml`)
 - **Build system**: `setuptools`
 
 ```bash
@@ -411,12 +408,7 @@ uv run ruff format . # format
 
 ## Legacy Code
 
-**Do not modify or reference code in these directories:**
-
-- `src/legacy/` — the pre-overhaul mapper implementation (config-file-driven SQL/SPARQL mapper)
-- `examples/legacy/` — examples for the legacy implementation
-
-These are excluded from linting (`ruff`) and are kept for historical reference only. The `mapper-legacy` git tag marks the last legacy release.
+The pre-overhaul, config-file-driven mapper implementation has been removed from the repository. The `mapper-legacy` git tag marks the last legacy release and preserves the full history.
 
 ---
 

CONTRIBUTING.md

@@ -96,7 +96,3 @@ uv publish
 - `tests/` — unit and integration tests
 - `examples/` — runnable examples demonstrating features
 - `docs/` — documentation assets (architecture diagrams)
-
-## Legacy Code
-
-The directories `src/knowledge_mapper/legacy/` and `examples/legacy/` contain pre-overhaul code kept for historical reference. **Do not modify these.**