Docs for v1.0.0-alpha9

Point-in-time snapshot of the kagent documentation at the kagent v1.0.0-alpha9 release.

What's Changed

• Update kagent 1.x reference docs at v1.0.0-alpha8 (version conrefs changed) by @github-actions[bot] in #564
• Update OTel docs for 1.0 telemetry config by @Rachael-Graham in #559
• Refresh observability docs for chart updates by @Rachael-Graham in #565
• docs: document serving the kagent UI under a sub-path (#535) by @boxcee-interview in #555
• Link fixes by @Rachael-Graham in #567
• Move substrate docs under About by @Rachael-Graham in #571
• Updated go mod for table fixes by @kristin-kronstain-brown in #568
• fix(docs): microvm WorkerPools can host kagent Actors (#537) by @boxcee-interview in #570
• Added NO_SEARCH to make file by @kristin-kronstain-brown in #572
• Removed double callout in tracing by @kristin-kronstain-brown in #574
• Docs for alpha9 by @Rachael-Graham in #573

Full Changelog: v1.0.0-alpha8...v1.0.0-alpha9