fix(uses): a :: selector resolved defs= and then answered a silent count=0

[aniruddhaadak80]

Fixes #164. --uses on a :: selector resolved defs= and then answered a silent count="0".

Defect

Every symbol-taking verb resolves the two :: spellings the tool prints about itself — the canonical id path::scope::name and Scope::name — through resolveAllByNameQualified. --callers, --callees, --impact and --expand then read the graph by NodeId, so the spelling stops mattering. --uses did not: resolveUsesSelector (src/verbs_navigate.h) kept the whole spelling as the site-match key, and collectUseSites compared that key against reference names, which are always bare. defs="1" beside count="0" reads as "defined, nothing uses it" — the misreading non-negotiable 3 exists to prevent — and --callers' own next= pointer sends the reader straight into it. --safe-delete's uses=, --verify="uses(...)"/"unused(...)" and the MCP uses twin ride the same scan/comparison.

Reproduction (code path, no binary on hand — see the toolchain note): sym.find("::") at resolveUsesSelector forced fileQualified=false and siteMatchName=sym; r.calleeName != sel.siteMatchName then skipped every reference. The pre-fix behavior is pinned on main today by the 12 KNOWN GAP arms in test/usesselectorcheck.sh (each PASSes asserting the silent zero).

Change

• resolveUsesSelector takes the resolved defs and, for a :: spelling whose defs are non-empty and share one name (commonDefsName, read off the defs — never a strip of the spelling), binds siteMatchName to that name and sets scopeNarrowed. The call role narrows through usesChosenCallers exactly as a file:name selector does; other roles stay name-matched. Mixed names (Elixir arity suffixes) keep today's whole-spelling key rather than a strip-and-match the precision controls forbid.
• The flag is set only on a resolving spelling, so Nope::ctwin keeps the generic refusal's bytes, and member spellings with no symbol behind them still reach memberUsesArm untouched (it only fires on empty defs).
• --safe-delete and --verify get the narrowed scan with no grammar change; --callers' next= is untouched (the sibling kit owns it).
• MCP twin, the plan's option (b): a resolving :: spelling refuses as CLI-only with the bare-name retry and the CLI form — the way file:name already refuses — instead of the silent zero. Member answers are exempt (consulted first, mirroring the CLI's member precedence). Tool descriptions untouched (the manifest ceiling has 23 B of headroom and this needs none).
• Legend and --help say what narrows now: A "file:name" or "::" SYM narrows ... (qualifier only). Legend +2 B (3956 vs the 3979 budget), help +15 B. docs/COMMANDS.md prose and the newest capture re-derived by the same substitution the binary emits.

What deliberately did not change: the next= pointer, every "Not this issue" row in the kit, the per-enclosing-symbol narrowing granularity, and the Owner.field member path (test/fieldusescheck.sh arm F pins Tally::limit as the symbol spelling and only asserts rc/defs/no-member, all preserved).

Tests

• test/usesselectorcheck.sh: every KNOWN GAP arm (section f plus arm d) flipped to its FIXED line, plus the kit's two extra assertions — same-definition-same-rows (:: vs the proven file:name twin, on the fixture and on this repo) and verbs-agree (every role="call" row sits inside a --callers-listed caller, via declinecheck.sh's call_sites relation). Premises, controls, precision, negative and wrong-scope arms are byte-identical.
• Toolchain note: this box (Windows) has no C++ compiler, CMake, or bash — only Node, gh, and Python via the py launcher — so no local build or gate run was possible. Proof is CI on this PR: the flipped gate green, plus the full suite. I verified statically what can be verified statically: the COMMANDS.md prose against docs_commands_build.py's own parse/join/split/caveats (Answers, rest-prose, all 3 caveats match), the legend budget arithmetic, Allman/brace/span/container rules by review, and that no other caller of the old resolveUsesSelector signature remains.
• Known upcoming red, owned: test/printffmtparitycheck.sh pins --help/--help=all/--help=--uses and the --uses=distance answer by SHA-256, and both changed bytes by design (help prose, legend sentence). No other label should move — every pinned selector is a bare name and the fix is confined to :: spellings plus unconditional legend prose. I will re-pin exactly the red labels from CI-reported actuals in a follow-up commit on this branch, after reading which labels moved and why. If anything else moves, that is a defect in this change, not a pin update.

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📝 Summary

Summary by CodeRabbit

• New Features

  • Added support for :: scope-qualified selectors in CLI --uses, --safe-delete, and --verify commands.
  • Qualified selectors narrow results to matching definitions and call sites.

• Bug Fixes

  • Improved resolution of :: selectors for accurate use-site and verification results.

• Documentation

  • Updated help and usage documentation to describe file:name and :: formats.
  • Clarified qualifier disclosures and MCP guidance for qualified selectors.

Walkthrough

The change adds :: selector narrowing to CLI navigation verbs, filters matching call sites by the resolved bare name, refuses qualified MCP uses selectors, and updates documentation and regression tests.

Changes

Qualified selector narrowing

Layer / File(s)	Summary
Selector resolution and CLI narrowing src/verbs_navigate.h	:: selectors now resolve to a shared symbol name and narrow definitions, call sites, disclosures, --safe-delete, and --verify results.
MCP qualified-selector handling src/mcpverbs.h	MCP uses refuses qualified selectors when the bare name resolves and reports the bare-name or CLI retry.
Documentation and regression validation src/cli.h, docs/COMMANDS.md, docs/captures/..., test/usesselectorcheck.sh, test/printf_parity.manifest	Help, documentation, content hashes, and tests describe and validate the updated behavior.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix · Severity of issue fixed: Medium

Sequence Diagram(s)

sequenceDiagram
  participant CLI
  participant SelectorResolver
  participant UseSiteCollector
  participant XMLOutput
  CLI->>SelectorResolver: Resolve ::-qualified selector
  SelectorResolver->>CLI: Return shared name and narrowing flag
  CLI->>UseSiteCollector: Collect matching call sites
  UseSiteCollector->>XMLOutput: Emit filtered rows and qualifier disclosures

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Suggested reviewers: joyful-ii-v-i

Merge Risk: ⚪ Minimal · up to c80b3

The qualified-selector behavior aligns with the documented CLI and MCP contracts, so the change is mergeable pending normal checks.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 33.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 12 functions across 4 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main fix: resolving definitions for :: selectors instead of returning a silent zero count.
Description check	✅ Passed	The description directly explains the defect, implementation, affected commands, tests, and known limitations. It is fully related to the changeset.
Linked Issues check	✅ Passed	The PR satisfies the coding requirements in issue #164. src/verbs_navigate.h derives a bare site-match name from resolved definitions and narrows --uses, --safe-delete, and --verify for :: s…
Out of Scope Changes check	✅ Passed	The changed source, regression checks, help text, legends, generated documentation, and parity manifest entries support issue #164. The test-helper move only fixes script execution order. No unrelated…

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• Resolve merge conflict in branch fix/uses-qualified-selector

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[aniruddhaadak80]

Note for the maintainer: the CI run on this fork PR is sitting at action_required (first-time-contributor approval gate) — no jobs have started, so there is nothing to diagnose yet on my side. Once the run is approved and going, I expect exactly four printffmtparitycheck labels red by design (help, help_all, help_one, uses — help prose + legend bytes), and I will re-pin those hashes from the CI-reported actuals in a follow-up commit on this branch. Anything else red is a defect in the change and I will fix it here.

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Actionable comments posted: 1

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Inline comments:
In `@test/usesselectorcheck.sh`:
- Line 170: Update the call_sites invocations in the DU assignment and the
corresponding second call_sites check to preserve and validate the helper’s exit
status before evaluating output; fail the test when call_sites cannot parse
malformed or unreadable XML, rather than treating empty command-substitution
output as a passing agreement.

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• docs/COMMANDS.md
• docs/captures/COMMANDS_showcase_2026-09-13.md
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• test/usesselectorcheck.sh

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[aniruddhaadak80]

Diagnosis of run 34864502790 (all three failure groups), plus a fix just pushed in c80b3be:

1. \printffmtparitycheck\ FAIL (\uses\ stdout e8eac2b7 -> 3ed4a98e) — STALE, no action needed. That run tested headSha \40e69fb; the re-pin commit \4efa187\ (manifest now carries \3ed4a98e, the fixed output) landed after. A re-run on current HEAD should clear this gate.

2. \usesselectorcheck\ order-gate (\call_sites\ used at line 170, defined at line 220) — REAL, fixed in \c80b3be. My rewrite left the helper defined with the (f)-arm helpers while arm (d) calls it earlier. Pure move of the byte-identical function above first use; no behavior change.

3. \elixirsemanticcheck\ \KeyError: 'result'\ — REAL, needs a maintainer call. The gate's MCP arm (\elixirsemanticcheck.sh:256-262) sends \ ools/call\ \uses\ with a ::\ selector (\Contracts::@limit) and asserts the MCP answer equals the CLI answer. My \mcpverbs.h\ change deliberately refuses ::\ spellings on that verb (JSON-RPC error reply, hence no
esult\ key) on the grounds the verb has no narrowing machinery. So the gate's premise (MCP answers ::) and my change (MCP refuses ::) directly conflict. Options: (a) I extend the MCP verb to serve the narrowed answer like the CLI — real work, say so and I will do it; (b) the gate's MCP arm switches to the bare name for ::\ cases. Which do you prefer?

Note: no C++ toolchain on this box, so CI is the proof for all of the above — the push will re-run the full matrix.