perf(ci): parallelize monorepo build via mise DAG dependencies (#203)

* perf(ci): parallelize monorepo build via mise DAG dependencies

Restructures task execution from sequential to parallel:

Root mise.toml: changes build from sequential `run = [...]` to
parallel `depends = [agent, cdk, cli, docs]`. All packages now
build concurrently.

cdk/mise.toml: adds `depends = [":compile"]` to test and synth:quiet
so they wait for TypeScript compilation, while eslint runs immediately.
Removes compile from build's depends (it's now pulled in transitively).

DAG execution order:
  t=0:  agent:quality + cdk:compile + cdk:eslint + cli:build + docs:build
  t=35: cdk:test + cdk:synth (after compile finishes)
  t=185: all done

Critical path: cdk:compile (35s) → cdk:synth (150s) = ~3min
vs. previous serial: ~12min

Also removes redundant //docs:sync (already a dependency of //docs:build).

Refs #201

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* ci: test ubuntu-latest-4-cores runner with timing instrumentation

Probes whether larger runners are available to the org. If the job
queues and runs, mise parallelism should actually benefit from 4
real cores vs 2. If it fails, we know larger runners aren't enabled.

Adds nproc/RAM logging and SECONDS timing to measure the difference.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* ci: re-trigger after label removal

---------

Co-authored-by: bgagent <345885+scottschreckengaust@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: scottschreckengaust

.github/workflows/build.yml

@@ -17,6 +17,7 @@ run = "yarn eslint"
 
 [tasks.test]
 description = "Jest tests"
+depends = [":compile"]
 run = "yarn test"
 
 [tasks.synth]
@@ -25,6 +26,7 @@ run = "yarn synth"
 
 [tasks."synth:quiet"]
 description = "cdk synth (quiet)"
+depends = [":compile"]
 run = "yarn synth:quiet"
 
 [tasks.deploy]
@@ -54,5 +56,5 @@ description = "No-op bundle step for cdk/cdk.json (NodejsFunction bundles at syn
 run = "node -e \"process.exit(0)\""
 
 [tasks.build]
-description = "compile, test, eslint, synth (quiet)"
-depends = [":compile", ":test", ":eslint", ":synth:quiet"]
+description = "compile, test, eslint, synth (quiet) — DAG: compile first, then test+synth+eslint in parallel"
+depends = [":test", ":eslint", ":synth:quiet"]

cdk/mise.toml

@@ -151,16 +151,11 @@ run = [
 ##### BUILD #####
 ##################
 
-# Agent code is packaged by CDK (Docker asset); validate Python before heavy JS/CDK work.
-# Multiple `depends` run in parallel, so agent is a sole prerequisite, then packages run in order.
+# All packages run in parallel via DAG. Each resolves its own internal dependencies.
+# Agent quality runs alongside CDK/CLI/docs — no sequential bottleneck.
 [tasks.build]
-description = "Monorepo build (agent quality, then cdk, cli, docs)"
-depends = ["//agent:quality"]
-run = [
-  "MISE_EXPERIMENTAL=1 mise //cdk:build",
-  "MISE_EXPERIMENTAL=1 mise //cli:build",
-  "MISE_EXPERIMENTAL=1 mise //docs:build",
-]
+description = "Monorepo build (agent, cdk, cli, docs in parallel)"
+depends = ["//agent:quality", "//cdk:build", "//cli:build", "//docs:build"]
 
 [tasks.default]
 description = "Install + build"