docs(release): publish v1.11.9 release notes

[seakee]

Summary

Publish the curated Chinese and English release notes and reviewed Telegram post for CPA Manager Plus v1.11.9.
Document the SQLite rollup and analytics-filter reliability fixes together with the new double-confirmation safeguards for destructive provider and authentication-file actions.

Scope

• Frontend panel
• Manager Server
• CPA panel mode
• Full Docker mode
• Native packages / release
• Docs / Wiki
• CI / build / tooling

Changes

• Add tag-pinned Chinese and English release notes for v1.11.9.
• Add the reviewed Telegram HTML post used by the tag-triggered release workflow.

User Impact

The GitHub Release and Telegram notification will describe the reliability improvements and the additional confirmation required for manual AI provider and authentication-file deletion.

Compatibility / Runtime Notes

• CPA panel mode: Release documentation only; no additional runtime changes.
• Manager Server mode: Release documentation only; no additional runtime changes.
• Full Docker / native packages: The v1.11.9 tag will trigger the existing packaging and image workflows after this PR is merged.

Data / Security Notes

N/A. This PR contains release documentation only and does not change data, credentials, keys, or runtime behavior.

Risk / Rollback

Risk level: Low

Rollback notes: Close or revert this release-notes PR before tagging v1.11.9. No data rollback is required.

Verification

• Type check
• Lint
• Tests
• Build
• Manual UI check
• Docs/link check
• Not applicable, docs-only

Commands / evidence:

Remote main and release branch base: 0431803f216845a76872289e90527e165e1568f5
Release range: 3 non-merge commits, 17 files changed, +781 / -172
Both language links use tag-pinned GitHub blob URLs.
All three remote files exactly match the reviewed release drafts.
Telegram HTML: 221 characters, supported tags only, no screenshot section or community title.

Screenshots / Recordings

N/A. This PR contains release documentation only.

Docs

• README / README_CN updated for user-visible capabilities
• Matching docs manual and navigation updated
• Demo fixtures, screenshots, and deep links reviewed
• Release notes needed
• Not needed — explanation included below

Docs decision: Add the required bilingual v1.11.9 release notes and reviewed Telegram release post.

Related

Refs #448, #449, and #450.