chore: prepare v1.0.4 release metadata

[Alexander Zaslonov (azaslonov)]

Summary

Prepare public source metadata for v1.0.4. This branch contains one commit based directly on public main and changes only package.json, package-lock.json, and CHANGELOG.md.

• Set the package, lockfile, and root package versions to 1.0.4; dependencies are unchanged.
• Add release notes for operation-filtered OpenAPI/Swagger specifications (Honor operation extraction filters in OpenAPI specifications #296), the -v version flag (Support lowercase -v as a version flag alias #298), one-value-per-question identity setup prompts (fix: ask identity setup values one per question in Copilot prompts #300), and the README identity setup guidance and filtering guide updates (docs: clarify README identity setup uses GitHub Copilot prompt file #299, Honor operation extraction filters in OpenAPI specifications #296).
• No source, schema, dependency, or workflow changes; no new files.

Validation

• Structured package/lockfile checks: all version fields match 1.0.4; no non-version package fields changed.
• Exactly one v1.0.4 changelog section, identical to the internal release notes; git diff --check passed.
• Release-workflow agent prompt-length gate passed (1 agent file).
• The identical source tree passed internally: build, lint, and 1,585 tests (2 skipped); apiops -v, -V, and --version all print 1.0.4. PR CI remains required.

Release Coordination

Keep this PR draft until the v1.0.4 npm release is published. Merging to main triggers the existing Squad Release workflow, which creates the annotated v1.0.4 Git tag and GitHub release if the tag does not exist. Do not create a competing tag manually.

This PR does not publish to npm. No tag, GitHub release, or npm publication has been created by this preparation.

Related Issue(s)

Release metadata for changes already merged in #296, #298, #299, and #300. No new issue is closed by this metadata-only PR.

[Copilot]

Copilot review overview

🟡 Changes recommended

The changelog is missing the required v1.0.4 compare-link footer definition.

Get a fresh assessment by requesting another Copilot review.

Review effort: Balanced
Findings: 1

Open (1)

• Add missing compare link for release v1.0.4 · New

What changed in this PR

Prepares v1.0.4 release metadata and documents the merged fixes and guidance updates.

Changes:

• Bumps package metadata to 1.0.4.
• Adds v1.0.4 release notes.

File	Description
package.json	Updates package version.
package-lock.json	Synchronizes root lockfile versions.
CHANGELOG.md	Adds v1.0.4 release notes.

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