docs: release notes and changelog for v0.8.1

[tnaum-ms]

Summary

Prepares documentation for the v0.8.1 patch release.

Files changed

File	Change
CHANGELOG.md	New ## 0.8.1 section at the top
docs/release-notes/0.8.md	New ## Patch Release v0.8.1 section appended
docs/index.md	Added 0.8.1 link in the Release Notes index

What's covered (all PRs in milestone 0.8.1)

New Features

• Item counts on tree nodes — collection count on database nodes, index count on Indexes folder (Show item counts on tree nodes (indexes, collections) #714, Show collection count on database tree items 🔢 #658, Show index count on the Indexes folder node 🔢 #659)
• AI model transparency in Query Insights — cost disclosure + model attribution (feat: AI model transparency for Query Insights panel #690)
• Batch connection deletion — multi-select delete in Connections View (feat: support batch deletion of multiple connections #667)

Improvements / Fixes

• Faster startup and connection loading — concurrent secret reads, activation-time read coalescing, one-time cleanup gating, fewer zone reads; removes legacy Azure Databases import path (perf(storage): speed up connection load and clarify in-memory wrapping #726)
• Node 24 compatibility fix — azext libs updated to avoid removed node:util.isNullOrUndefined (chore: update azext libs for Node 24 compatibility #699)
• Critical activation crash fix — TDZ circular module dependency resolved (fix(webviews): resolve TDZ error on extension activation #682)
• Throttled background document-count fetches — concurrency limiter to avoid pool saturation (perf(tree): throttle background document-count fetches #685)
• Hidden index visibility and context menu cleanup (fix: improve hidden index tree item visibility and menu actions #674, Index tree items lack visual indication of hidden state & show incorrect context menu actions 👁️🗂️ #656)
• Shard key displayed in collection tooltip (fix: display shard key in collection tooltip #670, Show shard key in collection tooltip 🔑 #661)
• Contextual Query Playground filenames (fix(playground): use contextual untitled filenames #664, Use context-aware filenames for new Query Playgrounds 📝 #660)
• _id_ index always sorted first (fix(tree): sort _id_ index first in the index list #662, Sort _id_ index first in the index list 📌 #657)
• credentialId → clusterId parameter rename (refactor(ClustersClient): rename credentialId parameter to clusterId [reviewed] #652, Code quality: Rename credentialId to clusterId in ClustersClient methods #567)
• Removed obsolete notification migration code (chore: remove obsolete release notes notification migration #622, Remove 0.8.0-bugbash migration and simplify pre-0.7.0/prerelease guards in releaseNotesNotification #611)

Dependencies

• webpack-dev-server, @nevware21/ts-utils, qs/express updates (chore(deps-dev): bump webpack-dev-server from 5.2.3 to 5.2.4 #654, chore(deps): bump @nevware21/ts-utils from 0.13.0 to 0.14.0 #672, chore(deps-dev): bump @nevware21/ts-utils from 0.12.5 to 0.14.0 in /api #673, chore(deps): bump qs and express #678)

Community contributions highlighted

Explicit shoutouts in the release notes for:

• @lte-z — fix: improve hidden index tree item visibility and menu actions #674 and fix: display shard key in collection tooltip #670
• @omribz156 — fix(playground): use contextual untitled filenames #664
• @Jacquelinezhong — fix(tree): sort _id_ index first in the index list #662
• @Green00101 — chore: remove obsolete release notes notification migration #622
• @CalvinMagezi, @Jah-yee, @Enocko — refactor(ClustersClient): rename credentialId parameter to clusterId [reviewed] #652 (triple independent contribution to the same issue)

[Copilot]

Pull request overview

This PR prepares the documentation set for the v0.8.1 patch release by adding release notes and a corresponding changelog entry, and by updating the docs index so readers can discover the new patch section.

Changes:

• Added a new 0.8.1 section to CHANGELOG.md summarizing features, improvements, fixes, and dependency updates.
• Appended a Patch Release v0.8.1 section to the 0.8 release notes page with detailed, PR-linked highlights and community shoutouts.
• Updated the docs release-notes index to link directly to the new v0.8.1 patch section anchor.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
CHANGELOG.md	Adds a top-level 0.8.1 entry with structured bullets and PR/issue links for the patch release.
docs/release-notes/0.8.md	Appends a new “Patch Release v0.8.1” section consistent with prior patch-release formatting and cross-links to the changelog anchor.
docs/index.md	Adds a 0.8.1 link pointing to the correct patch-release anchor within the 0.8 release notes page.

[github-actions]

✅ Code Quality Checks

Check	Status	How to fix
Localization (l10n)	✅ Passed
ESLint	✅ Passed
Prettier formatting	✅ Passed

This comment is updated automatically on each push.

[github-actions]

📦 Build Size Report

Metric	Base (main)	PR	Delta
VSIX (vscode-documentdb-0.8.1.vsix)	7.60 MB	7.60 MB	⬆️ +2 KB (+0.0%)
Webview bundle (views.js)	5.88 MB	5.88 MB	✅ 0 KB (0.0%)

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