docs: agent evaluation framework (stack 5/5)

[MarioCadenas]

Stack 5/5 · targets pr/agent-evals-4-suite (review after #4).

Documentation for the eval framework: a new "Evaluating agents" section in docs/docs/plugins/agents.md covering defineEval, assertions, judges, conversations, datasets, the full CLI flag reference, per-directory config, and MLflow reporting.

(Regenerated typedoc API docs will be added here too.)

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📦 Bundle size report

Compared against bundle-size-baseline.json (main).

@databricks/appkit

npm tarball (packed): 1.1 MB (+14 KB) — gzipped download (dist + bin; excludes release-only docs/NOTICE).

dist	raw	gzip
JS (runtime)	1.1 MB (+12 KB)	410 KB (+4.2 KB)
Type declarations	424 KB (+5.7 KB)	152 KB (+2.1 KB)
Source maps	2.3 MB (+24 KB)	769 KB (+8.0 KB)
Other	11 KB	3.7 KB
Total	3.8 MB (+41 KB)	1.3 MB (+14 KB)

Per-entry composition (own code — deps external (as shipped))

Entry	Initial (gz)	Lazy (gz)	Total (gz)	node_modules (min)	Own code (min)
.	95 KB	2.5 KB	98 KB	external	313 KB
./beta	92 KB (+1.5 KB)	457 B	92 KB (+1.5 KB)	external	277 KB (+4.0 KB)
./testing	17 KB	0 B	17 KB	external	52 KB
./tsdown	520 B	0 B	520 B	external	813 B
./type-generator	23 KB	0 B	23 KB	external	65 KB

Chunks:

Entry	Chunk	Load	Size (gz)
.	index.js	initial	91 KB
.	utils.js	initial	4.0 KB
.	remote-tunnel-manager.js	lazy	2.5 KB
./beta	beta.js	initial	75 KB
./beta	stream-manager.js	initial	5.8 KB
./beta	wide-event-emitter.js	initial	3.2 KB
./beta	databricks.js	initial	3.2 KB
./beta	configuration.js	initial	2.3 KB
./beta	service-context.js	initial	1.3 KB
./beta	client.js	initial	434 B
./beta	client-options.js	initial	220 B
./beta	supervisor-api.js	lazy	192 B
./beta	databricks.js	lazy	142 B
./beta	index.js	lazy	123 B
./testing	index.js	initial	17 KB
./tsdown	index.js	initial	520 B
./type-generator	index.js	initial	23 KB

@databricks/appkit-ui

npm tarball (packed): 350 KB — gzipped download (dist + bin; excludes release-only docs/NOTICE).

dist	raw	gzip
JS (runtime)	395 KB	132 KB
Type declarations	229 KB	84 KB
Source maps	766 KB	253 KB
CSS	16 KB	3.2 KB
Total	1.4 MB	473 KB

Per-entry composition (consumer bundle — deps bundled, peerDeps external)

Entry	Initial (gz)	Lazy (gz)	Total (gz)	node_modules (min)	Own code (min)
./js	5.3 KB	49 KB	55 KB	208 KB	14 KB
./js/beta	20 B	0 B	20 B	0 B	0 B
./react	432 KB	49 KB	481 KB	1.3 MB	177 KB
./react/beta	1.0 KB	0 B	1.0 KB	0 B	1.9 KB

Chunks:

Entry	Chunk	Load	Size (gz)
./js	index.js	initial	5.2 KB
./js	chunk	initial	120 B
./js	apache-arrow	lazy	49 KB
./js/beta	beta.js	initial	20 B
./react	index.js	initial	430 KB
./react	tslib	initial	2.1 KB
./react	apache-arrow	lazy	49 KB
./react/beta	beta.js	initial	1.0 KB

[github-actions]

🤖 AppKit PR bot

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📦 Try this PR's app template

Scaffolds a new app from this PR's SDK build. Run it in any folder (requires the GitHub CLI — gh auth login — and the Databricks CLI):

gh run download 34379591788 -R databricks/appkit -n appkit-template-0.73.0-pr.3e2d4ba-pr-agent-evals-5-docs-481 -D appkit-pr-481 \
  && unzip -o "appkit-pr-481/appkit-template-0.73.0-pr.3e2d4ba-pr-agent-evals-5-docs-481.zip" -d "appkit-pr-481" \
  && databricks apps init --template "appkit-pr-481"

The template pins @databricks/appkit and @databricks/appkit-ui to tarballs built from this branch, so the scaffolded app runs against this PR's code.