docs: add Hindsight ecosystem page

[DK09876]

Summary

Adds an ecosystem documentation page for Hindsight, an open-source (MIT) long-term memory engine for AI agents.

The hindsight-ag2 package (PyPI) provides register_hindsight_tools() to give AG2 agents persistent memory via three tools: retain (store), recall (search), and reflect (synthesize).

Changes

• Added website/docs/ecosystem/hindsight.mdx with installation, single-agent example, GroupChat example, and resources
• Added docs/ecosystem/hindsight to the Ecosystem sidebar in mint-json-template.json.jinja

Package details

• PyPI: hindsight-ag2
• GitHub: vectorize-io/hindsight
• License: MIT
• Dependencies: ag2>=0.9.0, hindsight-client>=0.4.0

🤖 Generated with Claude Code

[CLAassistant]

All committers have signed the CLA.

[marklysze]

Clean ecosystem doc page. The content is accurate — covers installation, quickstart, and a clear AG2 integration example. The three tools (retain/recall/reflect) are well described. Sidebar entry in mint-json-template.json.jinja matches the new file path. CI clean. ✓

[marklysze]

Thanks @DK09876 happy to merge through as it works directly with AG2. Please note that we are focused on our beta set of code (autogen/beta) and as this is focused on the "classic" version of AG2 the documentation addition may not be retained when we move to version 1.0. It is currently undecided, hence I'm letting you know just in case.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

❗ There is a different number of reports uploaded between BASE (8a5213e) and HEAD (2de8f48). Click for more details.

HEAD has 19 uploads less than BASE

Flag	BASE (8a5213e)	HEAD (2de8f48)
ubuntu-latest	5	1
beta	7	0
3.14	1	0
3.10	1	0
3.13	3	0
macos-latest	1	0
3.12	1	0
windows-latest	1	0

see 388 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.