Forge capacity: more runners + BROKK_PROJECT_MAX_INFLIGHT

[brokk-ccl]

Goal

Raise how many Forge cards can execute in parallel — today the deepen batch sits behind one brokk-project lease while forge-b idles.

Observed (2026-07-24)

• 2 runners live (forge + forge-b).
• All harness deepen cards share project brokk (e29e94d0…).
• ADR 0017 serial-per-app: claimNext skips any project with a live lease → only 1 brokk card at a time, regardless of runner count.
• forge-b registered and healthy but claims nothing while multi-profile holds the lease.
• Per-card worktrees already isolate git trees; the lease still serializes the whole app.

Two levers (ship both, gated by env)

1. More claim runners — add forge-c (same as forge-b: BROKK_SUPERVISOR=0) in docker-compose.coolify.yml / forge compose. Document Coolify service. Pure capacity for cross-project fan-out.
2. Per-project concurrency — env BROKK_PROJECT_MAX_INFLIGHT (default 1 = today’s serial). When >1, claimNext allows up to N live leases/runs per project (or N running tasks), still one card per runner process. Prefer worktree-isolated feature/PR flow; do not loosen shared dev checkout without an explicit guard (landed/dev-lane stays serial or separate flag).
3. Board/ops: show inflight/max on project or queue so capacity is visible.
4. Tests: claim two queued cards on same project when max=2; still blocks at max; default=1 unchanged.
5. Short docs note (README or ADR 0017 follow-up).

Out of scope

• Kubernetes Job-per-card.
• Autoscaling by queue depth (can be later).
• Changing OpenHands RUNTIME.

Acceptance

• With BROKK_PROJECT_MAX_INFLIGHT=2 + ≥2 runners, two brokk deepen cards can be running at once on separate worktrees.
• Default remains serial (no behavior change until env set).
• forge-c (or documented Nth replica) boots claim-only and drains other projects while brokk is busy.

Verify: ❌ failed

verify output

Scope: 17 of 19 workspace projects
packages/afl typecheck$ tsc --noEmit
packages/core typecheck$ tsc --noEmit
packages/repomap typecheck$ tsc --noEmit
packages/core typecheck: sh: 1: tsc: not found
packages/repomap typecheck: sh: 1: tsc: not found
/home/brokk/work/worktrees/brokk__forge-capacity-more-runners-brokk-project-max-in-f634a121/packages/repomap:
 ERR_PNPM_RECURSIVE_RUN_FIRST_FAIL  @brokk/repomap@0.0.0 typecheck: `tsc --noEmit`
spawn ENOENT
packages/afl typecheck: sh: 1: tsc: not found
 WARN   Local package.json exists, but node_modules missing, did you mean to install?
 WARN   Local package.json exists, but node_modules missing, did you mean to install?
 WARN   Local package.json exists, but node_modules missing, did you mean to install?


Command failed: pnpm -r --filter=!@brokk/web typecheck && pnpm --filter @brokk/afl test

E2E: ❌ failed · legacy-acceptance

e2e output

[e2e] check timed out after 120s

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🔨 Forged by Brokk · task 353d32f4-e06a-4fcf-a546-6e9460aec9b3