docs: update advanced-imessage-ts documentation for v0.3.0

[photon-action-bot]

Documentation Update: advanced-imessage-ts v0.3.0

This PR updates documentation for advanced-imessage-ts based on the v0.3.0 release.

Release Notes

New Features

• Streaming subscriptions now send lightweight Heartbeat events to keep long-lived connections alive through proxies (like Cloudflare Tunnel) and reduce unexpected disconnects. This applies to chat, group, message, poll, and scheduled-message event streams. 🔄

Improvement

• Generated TypeScript client types were updated to include the new heartbeat payload on stream responses, so apps can handle or safely ignore keepalive events without custom work.

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Version: 0.3.0

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🤖 This PR was auto-generated by Claude Code via the update-docs action in buildspace.

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[github-actions]

Resolved merge conflicts after merging origin/main into this branch.

pnpm-lock.yaml: This was the only conflict. Main's lockfile referenced @photon-ai/advanced-imessage@^0.1.0, but this PR's package.json uses ^0.3.0. Accepted main's lockfile as the base and regenerated with pnpm install --no-frozen-lockfile to update for v0.3.0.

Verified: pnpm lint and pnpm typecheck:docs both pass.

[github-actions]

Resolved merge conflicts between docs/update-advanced-imessage-ts-v0.3.0 and main.

Conflicts found:

package.json

• @antfu/eslint-config: PR had ^4.15.1, main had ^4.19.0 → kept main's newer version
• @photon-ai/advanced-imessage: PR had ^0.3.0, main had ^0.4.2 → kept main's newer version

pnpm-lock.yaml

• Accepted main's lockfile in full (generated file)

Resolution strategy: Preferred main's versions for dependency/lockfile files. No content files had conflicts.

Verification: pnpm install --frozen-lockfile ✅ | pnpm lint ✅ | pnpm typecheck:docs ✅

[github-actions]

Merge conflict resolution

Conflicts found:

• package.json: Conflict between PR's dependency versions (@antfu/eslint-config ^4.15.1, @photon-ai/advanced-imessage ^0.3.0) and main's updated versions (@antfu/eslint-config ^4.19.0, @photon-ai/advanced-imessage ^0.4.2)

Resolution:

• package.json: Took main's updated dependency versions, as these are dependency/config updates unrelated to the v0.3.0 docs content of this PR
• pnpm-lock.yaml: Regenerated to match the resolved package.json

pnpm lint and pnpm typecheck:docs both pass after resolution.