Feature: Config CLI coverage boost
  Supplementary scenarios targeting uncovered lines in
  cleveragents/cli/commands/config.py to increase branch and line coverage.

  Background:
    Given a cfg-boost isolated temp config directory

  # ── _env_var_for_key: line 135 ──────────────────────────────────────

  Scenario: _env_var_for_key returns the registered env_var for a known key
    When I call cfg-boost _env_var_for_key with a registered key "core.log.level"
    Then the cfg-boost returned env var should match the registry for "core.log.level"

  # ── _resolve_source error path: lines 145-146 ──────────────────────

  Scenario: _resolve_source returns default when resolve raises ValueError
    When I call cfg-boost _resolve_source with a key that triggers ValueError
    Then the cfg-boost returned source should be "default"

  # ── _resolution_chain error path: lines 155-156 ─────────────────────

  Scenario: _resolution_chain returns empty list when resolve raises KeyError
    When I call cfg-boost _resolution_chain with a key that triggers KeyError
    Then the cfg-boost returned chain should be empty

  # ── config_set --project with non-scopable key: line 210 ────────────

  Scenario: config set --project fails for non-project-scopable key
    When I invoke cfg-boost config set "core.data-dir" "val" with project "myproj"
    Then the cfg-boost CLI result should have failed
    And the cfg-boost CLI output should include "not project-scopable"

  # ── config_set --project with corrupted project section: line 213 ───

  Scenario: config set --project handles corrupted project section (not a dict)
    Given the cfg-boost config file has a non-dict "project" value
    When I invoke cfg-boost config set "plan.concurrency" "8" with project "myproj"
    Then the cfg-boost CLI result should have succeeded
    And the cfg-boost CLI output should include "plan.concurrency"

  # ── config_set --project with corrupted proj overrides: line 216 ────

  Scenario: config set --project handles corrupted project override entry (not a dict)
    Given the cfg-boost config file has a non-dict project override for "myproj"
    When I invoke cfg-boost config set "plan.concurrency" "6" with project "myproj"
    Then the cfg-boost CLI result should have succeeded
    And the cfg-boost CLI output should include "plan.concurrency"

  # ── config_get verbose non-rich with Path value in chain entry: line 306 ──

  Scenario: config get verbose non-rich format serialises Path values in resolution chain
    When I invoke cfg-boost config get "core.data-dir" verbose format "json" with path-like chain
    Then the cfg-boost CLI result should have succeeded
    And the cfg-boost JSON resolution chain entries should have string values

  # ── config_list --project with key regex filter skipping: lines 398-401 ──

  Scenario: config list --project filters keys by regex pattern
    Given the cfg-boost config file has project "testproj" override "plan.concurrency" as "10"
    When I invoke cfg-boost config list with project "testproj" pattern "nonexistent"
    Then the cfg-boost list output should show no matching overrides

  # ── config_list --project with value filter skipping: line 405 ──────

  Scenario: config list --project filters values by regex
    Given the cfg-boost config file has project "testproj" override "plan.concurrency" as "10"
    When I invoke cfg-boost config list with project "testproj" value-filter "NOMATCH999"
    Then the cfg-boost list output should show no matching overrides

  # ── config_list --project with secret masking: line 410 ─────────────

  @tdd_issue @tdd_issue_4237 @tdd_expected_fail
  Scenario: config list --project masks secret keys by default
    Given the cfg-boost config file has project "secproj" secret override "provider.openai.api-key" as "sk-supersecret"
    When I invoke cfg-boost config list project "secproj" format "json"
    Then the cfg-boost CLI result should have succeeded
    And the cfg-boost JSON list should show masked secret values

  # ── config_list --project non-rich with Path fspath: line 430 ───────

  @tdd_issue @tdd_issue_4237 @tdd_expected_fail
  Scenario: config list --project non-rich format serialises Path values
    Given the cfg-boost config file has project "pathproj" override "core.data-dir" as "/tmp/somepath"
    When I invoke cfg-boost config list project "pathproj" format "json" with path value
    Then the cfg-boost CLI result should have succeeded
    And the cfg-boost JSON list entries should have only primitive values

  # ── config_list --project rich format table rendering: lines 434-452 ──

  Scenario: config list --project renders rich table for project overrides
    Given the cfg-boost config file has project "richproj" override "plan.concurrency" as "12"
    When I invoke cfg-boost config list project "richproj" in default rich format
    Then the cfg-boost CLI result should have succeeded
    And the cfg-boost CLI output should include "plan.concurrency"
    And the cfg-boost CLI output should include "12"

  # ── config_list all non-rich with Path fspath: line 501 ─────────────

  @tdd_issue @tdd_issue_4237 @tdd_expected_fail
  Scenario: config list non-rich format serialises Path objects in all-keys mode
    When I invoke cfg-boost config list format "json" with path value in resolve_all
    Then the cfg-boost CLI result should have succeeded
    And the cfg-boost JSON all-keys list should have stringified path values
