feat: CTRL+SHIFT+CLICK on URI to find all triples where URI is object

[Copilot]

Extends the existing CTRL+CLICK URI lookup in both the query editor and the response viewer with a new CTRL+SHIFT+CLICK action that runs:

CONSTRUCT { ?s ?p <uri> } WHERE { ?s ?p <uri> } LIMIT 1000

Changes

• uriUtils.ts — Added buildObjectOfQuery(uri) alongside the existing buildDescribeQuery. Exported from the @matdata/yasr package index for reuse.
• packages/yasr/src/plugins/response/index.ts — handleMouseDown now branches on event.shiftKey: CTRL+SHIFT+CLICK appends the object-of CONSTRUCT result to the response view; plain CTRL+CLICK retains the existing DESCRIBE behaviour.
• packages/yasgui/src/Tab.ts — handleYasqeMouseDown similarly branches on event.shiftKey, calling buildObjectOfQuery for CTRL+SHIFT+CLICK and keeping the existing both-direction CONSTRUCT for plain CTRL+CLICK.
• packages/yasqe/src/index.ts — Cursor hint updated to describe both shortcuts: "CTRL+click: find triples where URI is subject or object. CTRL+SHIFT+click: find triples where URI is object."
• test/unit/response-uri-utils-test.ts — Fixed stale buildDescribeQuery assertion (was asserting DESCRIBE <uri>, now matches actual CONSTRUCT output); added coverage for buildObjectOfQuery.

• Fixes CONTROL+SHIFT+CLICK on URI should look up all triples where URI is object of #178

[Copilot]

🟡 Changes recommended

Some docs/user-facing messages still say “DESCRIBE” even though the code executes CONSTRUCT, which makes the UI output and comments misleading.

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Pull request overview

Adds a new URI lookup shortcut across MatGUI’s editor (YASQE/YASGUI) and plain response viewer (YASR Response plugin): CTRL+SHIFT+CLICK runs an “object-of” CONSTRUCT to retrieve triples where the clicked URI is the object, complementing the existing CTRL+CLICK behavior.

Changes:

• Added buildObjectOfQuery(uri) to YASR response URI utilities and exported it from @matdata/yasr for reuse.
• Updated YASR Response plugin and YASGUI Tab mouse handlers to branch on event.shiftKey and run the new object-of lookup on CTRL+SHIFT+CLICK.
• Updated YASQE cursor hint text and expanded unit tests for the URI query builders.

File summaries

File	Description
test/unit/response-uri-utils-test.ts	Updates buildDescribeQuery assertion to match current CONSTRUCT output; adds coverage for buildObjectOfQuery.
packages/yasr/src/plugins/response/uriUtils.ts	Introduces buildObjectOfQuery(uri) alongside existing query helpers.
packages/yasr/src/plugins/response/index.ts	Adds CTRL+SHIFT+CLICK handling to run object-of query and append results in the Response view.
packages/yasr/src/index.ts	Exports buildObjectOfQuery from the package entrypoint for reuse in YASGUI.
packages/yasqe/src/index.ts	Updates the on-cursor URI shortcut hint to mention both CTRL+CLICK and CTRL+SHIFT+CLICK behaviors.
packages/yasgui/src/Tab.ts	Uses buildObjectOfQuery for CTRL+SHIFT+CLICK; keeps existing CTRL+CLICK both-direction CONSTRUCT.

Review details

Suppressed comments (1)

packages/yasr/src/plugins/response/index.ts:193

• The non-shift shortcut path uses buildDescribeQuery(), which executes a CONSTRUCT query, but the appended headings and error logs still say "DESCRIBE". This makes the UI output inaccurate and can mislead users when interpreting the appended results or debugging failures.

  private async runObjectOfQuery(uri: string) {
    if (!this.yasr.config.executeQuery) return;
    const cmAtStart = this.cm;
    if (!cmAtStart) return;

• Files reviewed: 6/6 changed files
• Comments generated: 2
• Review effort level: Lite

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