Add function-scoped Logic visualization

docs/MCP_CONTRACT.md

@@ -15,6 +15,7 @@ canonical applier implementation.
 - `docforge_project_info`
 - `docforge_get_contract`
 - `docforge_get_node`
+- `docforge_get_logic`
 - `docforge_search`
 - `docforge_filter_nodes`
 - `docforge_backlinks`
@@ -85,14 +86,16 @@ only through the explicit local CLI integration command.
 
 ## Visualization boundary
 
-`docforge_visualize` starts the fixed built-in `graph-browser@15` template against the currently
+`docforge_visualize` starts the fixed built-in `graph-browser@16` template against the currently
 validated derived index. It may focus one stable node, run one bounded lexical query, or open the
 project overview. The tool returns a loopback URL and exact snapshot identity.
 
 The tool cannot select a project, database, template, host, port, filesystem path, or SQL
 expression. Its HTTP surface is token-bound, read-only, same-origin, and limited to overview,
 search, exact family/authority/status/tag filtering, node-neighborhood JSON, semantic Flow,
-convergence Web, and a bounded project-confined source read for one indexed node. The browser
+convergence Web, lazy function-scoped Logic, and a bounded project-confined source read for one
+indexed node. `docforge_get_logic` and the browser Logic endpoint accept one exact owner node ID and
+return only that bounded stored projection. The browser
 exposes an exact validated index snapshot. It rejects index
 replacement or alteration and requires another MCP invocation to refresh.
 Viewport interaction is entirely client-side: fitted neighborhood framing, wheel zoom, left-button
@@ -113,7 +116,10 @@ tooltips and inspectors. Flow presents semantic ancestry with relation-aware dir
 Web follows bounded structural, dependency, execution, evidence, and contextual contributors into
 the focus. Direct focus-owned members and execution dependencies become adjacent contributor
 branches without expanding unrelated siblings. The relationship key is regenerated from each
-visible view. The browser runs in a project-bound worker owned by
+visible view. Logic displays possible static control paths for a focused function or method without
+adding its statement-level nodes to primary search or architectural traversal. Hiding a Logic step
+bridges its retained predecessors and successors with an explicit omitted path. The browser runs in
+a project-bound worker owned by
 the separately supervised per-user viewer manager. Standard-input transaction completion and MCP
 host exit do not close the listener. Repeated visualization requests reuse the current worker while
 its exact snapshot remains valid. `docforge_visualization_status` reports lifecycle state, and