fix(config): allow extended effort with Claude CLI

[zzwong]

Summary

Claude CLI accepts xhigh and max effort for supported models, but CR rejected both before starting a review because its runtime capability limit stopped at high. This change raises only the Claude CLI limit; the Anthropic API adapter remains capped at high.

What changed

• Allow xhigh and max through configuration, stage resolution, benchmark validation, and review invocation for the Claude CLI runtime.
• Cover forwarding --effort max to the Claude subprocess and preserve rejection of extended effort for the Anthropic API adapter.
• Update user-facing effort documentation to match the current runtime limits and clarify that the installed CLI and selected model determine effective support.

Verification

• go test ./... — 3,325 tests passed across 71 packages.
• GOTOOLCHAIN=go1.26.3 make lint — no issues. The installed linter was built with Go 1.26.3; running it under the machine's default Go 1.27.1 caused an unrelated standard-library typecheck error.
• git diff --check — passed.

[monit-reviewer]

Automated PR Review

Reviewed commit: 920ca7108e3e
Profile: open-cli-collective-review - Posting as: monit-reviewer

Summary

Reviewer	Findings
go:implementation-tests	0
policies:conventions	0

Reviewer Coverage

• go:implementation-tests — complete (broad); inspected 8 assigned files (11 inspected across reviewers): internal/benchmark/suite_test.go, internal/cmd/reviewcmd/reviewcmd_test.go, internal/config/config.go, internal/config/config_effort_test.go, internal/config/config_max_effort_test.go, internal/llmadapters/subprocess_test.go, internal/pipeline/pipeline_test.go, internal/stagemodel/resolver_test.go; skipped: none; constraints: Static review only; the available CR tools cannot execute Go tests.
• policies:conventions — complete (broad); inspected 5 assigned files (11 inspected across reviewers): BENCHMARKING.md, README.md, docs/init-config-surface.md, internal/cmd/reviewcmd/reviewcmd_test.go, internal/config/config.go; skipped: none; constraints: Review was limited to repository-visible conventions; canonical shared CLI standards were not present in the provided context.

Inspected files (11)

• BENCHMARKING.md
• README.md
• docs/init-config-surface.md
• internal/benchmark/suite_test.go
• internal/cmd/reviewcmd/reviewcmd_test.go
• internal/config/config.go
• internal/config/config_effort_test.go
• internal/config/config_max_effort_test.go
• internal/llmadapters/subprocess_test.go
• internal/pipeline/pipeline_test.go
• internal/stagemodel/resolver_test.go

0 PR discussion threads considered. 0 summarized; 0 resolved.

---

Completed in 1m 32s | $0.04 | openai-codex/gpt-5.6-terra | cr 0.10.316

Field	Value
Model	openai-codex/gpt-5.6-terra
Reviewers	go:implementation-tests, policies:conventions
Engine	pi_rpc · openai-codex/gpt-5.6-terra
Reviewed by	cr · monit-reviewer
Duration	1m 32s wall · 1m 59s compute
Cost	$0.04
Tokens	11.0k in / 891 out

Per-workstream usage

• orchestrator-selection — openai-codex/gpt-5.6-terra
  • In: 6.2k
  • Out: 421
  • Cache read: 0
  • Cache create: 0
  • Cost: $0.02
  • Duration: 9s
• go:implementation-tests — openai-codex/gpt-5.6-terra
  • In: 1.9k
  • Out: 234
  • Cache read: 30.2k
  • Cache create: 0
  • Cost: $0.01
  • Duration: 1m 09s
• policies:conventions — openai-codex/gpt-5.6-terra
  • In: 1.6k
  • Out: 199
  • Cache read: 8.7k
  • Cache create: 0
  • Cost: $0.01
  • Duration: 37s
• orchestrator-rollup — openai-codex/gpt-5.6-terra
  • In: 1.3k
  • Out: 37
  • Cache read: 2.8k
  • Cache create: 0
  • Cost: $0.00
  • Duration: 3s

[monit-reviewer]

Automated PR Review

Reviewed commit: fdd87491be20
Profile: open-cli-collective-review - Posting as: monit-reviewer

Summary

Reviewer	Findings
go:implementation-tests	0
policies:conventions	0

Reviewer Coverage

• go:implementation-tests — complete (constrained); inspected 8 assigned files (11 inspected across reviewers): internal/benchmark/suite_test.go, internal/cmd/reviewcmd/reviewcmd_test.go, internal/config/config.go, internal/config/config_effort_test.go, internal/config/config_max_effort_test.go, internal/llmadapters/subprocess_test.go, internal/pipeline/pipeline_test.go, internal/stagemodel/resolver_test.go; skipped: none; constraints: Review scoped to the assigned changed Go implementation and test files.
• policies:conventions — complete (constrained); inspected 5 assigned files (11 inspected across reviewers): BENCHMARKING.md, README.md, docs/init-config-surface.md, internal/cmd/reviewcmd/reviewcmd_test.go, internal/config/config.go; skipped: none; constraints: none

Inspected files (11)

• BENCHMARKING.md
• README.md
• docs/init-config-surface.md
• internal/benchmark/suite_test.go
• internal/cmd/reviewcmd/reviewcmd_test.go
• internal/config/config.go
• internal/config/config_effort_test.go
• internal/config/config_max_effort_test.go
• internal/llmadapters/subprocess_test.go
• internal/pipeline/pipeline_test.go
• internal/stagemodel/resolver_test.go

0 PR discussion threads considered. 0 summarized; 0 resolved.

---

Completed in 59s | $0.04 | openai-codex/gpt-5.6-terra | cr 0.10.316

Field	Value
Model	openai-codex/gpt-5.6-terra
Reviewers	go:implementation-tests, policies:conventions
Engine	pi_rpc · openai-codex/gpt-5.6-terra
Reviewed by	cr · monit-reviewer
Duration	59s wall · 1m 27s compute
Cost	$0.04
Tokens	14.0k in / 763 out

Per-workstream usage

• go:implementation-tests — openai-codex/gpt-5.6-terra
  • In: 2.5k
  • Out: 512
  • Cache read: 9.7k
  • Cache create: 0
  • Cost: $0.01
  • Duration: 42s
• policies:conventions — openai-codex/gpt-5.6-terra
  • In: 10.2k
  • Out: 214
  • Cache read: 12.8k
  • Cache create: 0
  • Cost: $0.03
  • Duration: 42s
• orchestrator-rollup — openai-codex/gpt-5.6-terra
  • In: 1.3k
  • Out: 37
  • Cache read: 2.8k
  • Cache create: 0
  • Cost: $0.00
  • Duration: 3s