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+# Runtime Call / Source Dependency SVG Split Design
+
+## Brief
+
+Split the two panels in `runtime-call-source-dependency.svg` into two standalone SVG assets. Do not change reader-facing Markdown or remove the existing combined SVG.
+
+## Local evidence
+
+- The combined SVG is a `1400 × 660` canvas with an upper runtime-call panel and a lower source-dependency panel.
+- Identical assets exist in the generated run output and the golden fixture.
+- Both corresponding documents currently reference the combined SVG.
+- No maintained generator source for this asset exists in the repository; the metadata only names a historical `_work/regenerate-technical-assets.py` path.
+
+## Output
+
+Create these files in both asset directories:
+
+- `runtime-call.svg`: the upper “실행 시점 관계” panel.
+- `source-dependency.svg`: the lower “계약 소유·소스 의존” panel.
+
+Each file will be a complete, independently renderable SVG with:
+
+- a tightly fitted canvas and `viewBox`;
+- its own accessible `<title>` and `<desc>`;
+- only the marker definitions it uses;
+- the same typography, colors, labels, nodes, and relationships as its source panel.
+
+The existing `runtime-call-source-dependency.svg` remains unchanged for compatibility. Markdown references and alt text remain unchanged.
+
+## Geometry
+
+The panels will retain their original `1400`-unit width so horizontal proportions do not change. Vertical coordinates will be translated upward to remove the unused space belonging to the other panel. A small outer margin will be preserved around each panel.
+
+The runtime-call asset will contain only `FeedController → GetFeedUseCase → SpringTransactionPort` and its solid-arrow labels. The source-dependency asset will contain only the interface, implementation, and dashed dependency relationships from the lower panel.
+
+## Validation
+
+- Parse all four new files as XML.
+- Confirm each SVG has the expected root dimensions, `viewBox`, title, description, and referenced marker definitions.
+- Confirm the runtime asset excludes lower-panel labels and the source-dependency asset excludes upper-panel labels.
+- Confirm the golden and run-output copies are byte-identical for each new asset.
+- Render or inspect both assets to catch clipping and layout regressions.
+
+## Scope boundary
+
+This change does not revise document prose, document image references, the existing combined asset, the technical-writing pipeline, or the asset-generation system.