fix(eslint): detect dropped await on local core.summary aliases

[Copilot]

The require-await-core-summary-write rule had a false negative when core.summary was aliased to a local variable — getRootIdentifier on summary.write() returned "summary", which failed the CORE_ALIASES check and silently skipped the call. This pattern is live in two corpus files.

Changes

• isCoreSummaryAlias(identifier) — new helper inside create() that uses ESLint scope analysis to check whether an identifier is a single-assignment local bound to core.summary. Two patterns are tracked:

  • const/let summary = core.summary
  • const { summary } = core / const { summary: alias } = core

  Re-assigned let bindings are rejected via ref.isWrite() && !ref.init; non-core initialisers are ignored.

• rootsSummaryOrAlias(node) — replaces the direct rootsSummary call in ExpressionStatement. Delegates to rootsSummary first (fast path), then resolves Identifier nodes through alias lookup and handles chained calls (summary.addRaw(x).write()).

Now flagged

async function f() {
  const summary = core.summary;
  summary.write();                   // was: FN — now flagged ✓

  const { summary: s } = core;
  s.addRaw(x).write();               // was: FN — now flagged ✓
}

Still not flagged (zero false positives)

async function f() {
  let summary = core.summary;
  summary = other;
  summary.write();                   // re-assigned — source unknown, safe to skip
}

[github-actions]

🤖 PR Triage — Run §28715668077

Field	Value
Category	bug
Risk	🟢 Low
Score	54/100
Impact	26/50
Urgency	18/30
Quality	10/20
Action	batch_review
Batch	pr-batch:eslint-bugfix

Detects dropped await on local core.summary aliases. +80/-2 TS rule, +40 test. Low risk eslint bugfix.

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