Lint rule: prefer `...(cond && obj)` over `...(cond ? obj : {})`

Status#

Done, pending review. Rule + tests in commit 2; repo-wide --fix in commit 3. PR: https://github.com/iterate/iterate/pull/2487

Add a deterministic, auto-fixable custom oxlint rule (iterate/prefer-logical-and-spread) that rewrites

const x = {
  ...(f ? { abc: f.def } : {}),
};

const x = {
  ...(f && { abc: f.def }),
};

Object spread of any falsy value is a no-op (same as spreading {}), so the ternary's : {} arm is dead weight.

Scope: only spreads inside object literals (SpreadElement whose parent is an ObjectExpression). Array spread of falsy throws, so it's excluded. JSX spread attributes left out to keep the rule tight.
Only the exact stated direction: alternate must be an empty object literal {}. The mirrored cond ? {} : obj form is NOT rewritten to !cond && obj (adds a negation, less obviously a pure win).
The consequent can be any expression (e.g. f ? f.extras : {} → f && f.extras) — same falsy-spread reasoning applies.
Fix wraps the test/consequent in parens when precedence demands it (a || b ? x : {} → (a || b) && x; f ? (a ?? b) : {} → f && (a ?? b)), so the fix is always parse- and semantics-preserving.
If comments live inside the ternary but outside the test/consequent nodes, report without a fix rather than silently dropping them.

add iterate/prefer-logical-and-spread rule to lint/oxlint-plugin-iterate.ts implemented with a needsParensInsideLogicalAnd precedence helper; reports fix-less when the rewrite would drop a comment
enable it as error in .oxlintrc.json alongside the other iterate/* rules
test file lint/oxlint-plugin-logical-and-spread.test.ts covering report, fix output (incl. precedence parens), and non-matches 5 tests, runs the real oxlint binary with --fix and asserts the rewritten files
run pnpm lint:fix across the repo, commit the mechanical fixes separately 71 files; see notes

oxlint --fix needed two passes: fixes for conditional spreads nested inside another conditional spread's consequent overlap the outer fix, so oxlint defers them to the next run (7 such sites, e.g. apps/os/src/lib/agent-round-meta-yaml.ts).
Three sites in scripts/preview/{e2e-telemetry,preview}.ts spread on an unknown-typed test (caught errors), and ...(unknown && {…}) is TS2698. Hand-tweaked to ...(!!input.error && {…}) — identical runtime semantics, and !! makes the spread type false | {…}.