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Reusable workflow definitions reduce prompt drift and enforce a consistent invocation contract. This is not a substitute for “Write deterministic steps and verifiable success criteria for the skill”; that control is necessary in the stated circumstances. Specific requirements make repeated runs more consistent and easier to review.

Skill metadata documents how to invoke the capability and what input it expects. Here, a custom workflow changes behavior with every invocation because its instructions are vague. Write deterministic steps and verifiable success criteria for the skill. Specific requirements make repeated runs more consistent and easier to review.

Isolation preserves the main conversation and lets the task operate with scoped context. The direct remedy is “Write deterministic steps and verifiable success criteria for the skill”, which the alternative does not itself accomplish. Specific requirements make repeated runs more consistent and easier to review.

Returning artifact paths from an isolated skill makes outputs inspectable, but a composite skill must also know which reviewer step is a prerequisite and whether that step passed. Explicitly enforce dependency completion and verify returned results before the main skill declares its own success.

A forked execution context can keep verbose review steps from overwhelming the parent task. Although useful elsewhere, it is not the direct mechanism to treat nested skill outcomes as testable dependencies.

A skill definition should express not just instructions but permitted capabilities. This alternative does not establish how to treat nested skill outcomes as testable dependencies in the stated workflow.

A fork isolates task context, so its deliverables must be passed back explicitly. Without concrete file paths and result evidence, the parent cannot validate or incorporate the artifacts.

A forked execution context can keep verbose review steps from overwhelming the parent task. That addresses a different part of the system, not the requirement to propagate verifiable artifacts across skill contexts.

A skill definition should express not just instructions but permitted capabilities. This alternative—Limit the skill's allowed tools to the necessary read operations—does not implement the specific operation that the question asks about. The required control is Return artifact paths and summary evidence from the isolated execution. Forking context isolates reasoning, not necessarily every output.

A Python-only file glob would miss TypeScript React test files named *.test.tsx. The relevant constraint applies across packages to those test filenames, so define a scoped rule with an appropriate **/*.test.tsx matcher rather than a language-mismatched Python pattern.

Path-based rules are triggered by applicability. This capability does not directly apply cross-directory guidance to files matching a pattern. Testing glob matches is useful validation, but it does not define the cross-directory mocking convention initially. Create the path-scoped rule, then test its matches.

Testing glob behavior helps verify an existing path rule, but the requirement is to establish a reusable mocking convention for all scattered *.test.tsx files. Put the convention in a path-scoped.claude/rules entry, then test representative matching paths as a validation step.

Valid YAML frontmatter can still carry a pattern that matches generated JSON unintentionally. The rule loads but its scope is too broad. Narrow the path matcher to TypeScript sources and exclude generated artifacts; syntax validation alone does not protect those files.

An unscoped code-lint rule should not rewrite generated non-TypeScript artifacts. Path-specific lint rules should match the language and files they can sensibly govern. Applying TypeScript rules to generated JSON adds noise and may obscure the actual validations appropriate to JSON artifacts.

A Python-only matcher is unrelated to a TypeScript lint rule and does not solve why generated JSON is being affected. Define TypeScript-specific patterns with explicit exclusions for generated output, then test the intended and excluded paths.

Duplicate local copies drift and increase upkeep. This is not a substitute for “Use separate rule files under.claude/rules/ with precise path applicability”; that control is necessary in the stated circumstances. Overly broad root instructions increase conflicts and may load requirements into unrelated tasks.

Global mixed instructions can spill across unrelated packages and are harder to maintain. A global instruction file would impose unrelated requirements on every package and consume context unnecessarily. Preserve shared fundamentals centrally, then place framework-specific rules under the relevant scoped paths.

Content conventions should apply only where intended. That addresses a different part of the system, not the requirement to separate independent configuration modules by concern.

Inspecting a suspicious glob is useful for diagnosis, but the team needs evidence of exactly which files trigger nested rules. Run matching and nonmatching path examples against the configured patterns; reviewing only the pattern text cannot establish its behavior across the repository.

Globs can apply conventions across multiple directories without repeating local CLAUDE.md files. It would leave the stated need to verify rule applicability with real repository paths unresolved.

Generated sources often need regeneration rather than direct edits. This alternative does not establish how to verify rule applicability with real repository paths in the stated workflow.

Tool results carry observations from a real tool operation, not repository instruction-file configuration. Manufacturing a tool_result cannot cause an Agent SDK session to load the omitted project settings. Fix the source selection before relying on rules in the coding task.

User-local instruction files are useful for private preferences, but relocating all repository policies to a home directory changes their intended ownership and scope. The project already has path-specific rules in.claude/rules. Enable the project setting source and confirm matching rules load as designed.

BypassPermissions changes tool authorization, not which repository instruction sources the SDK reads. It can introduce risk while leaving the project rules missing. Set settingSources appropriately and test the effective memory/rules loading separately from execution permissions.

Loading a migration safeguard for stylesheets and images needlessly pollutes unrelated work and may cause misleading instructions outside database changes. Restrict the rule to the db/migrations subtree and SQL suffixes so destructive migration safeguards appear exactly when relevant.

A Python filename glob cannot correctly scope SQL migration guidance. Use a path-scoped rule matching SQL files under db/migrations and test that ordinary Python code and other resources do not load those instructions.

Configuration syntax determines whether a rule is loaded. This capability does not directly target sensitive-path safeguards precisely. Correct frontmatter syntax is necessary, but the requirement is to scope migration safeguards to the SQL subtree. A valid global rule could still affect unrelated files.

Rules control future agent behavior. It would leave the stated need to enforce conventions across scattered path locations unresolved. Peer reviewing rule changes is an important governance practice, but the stated advantage of globs is filename matching across many feature directories. Review policy does not implement pattern coverage.

Inspecting a glob is good rule-maintenance practice, but the question asks why a cross-cutting filename pattern is preferable to one nested instruction file. A glob reaches test filenames spread across many packages; a nested CLAUDE.md only covers its own directory hierarchy.

Testing match behavior verifies a path-scoped rule after it has been defined. It does not explain the architectural advantage of the pattern: scattered test files can all match **/*.test.tsx independent of which package owns them.

Overbroad matching loads irrelevant instructions into tasks. The scenario instead requires a way to fix malformed scoped-rule metadata. Narrowing a rule's file pattern does not fix a misspelled path key that the loader ignores. The first repair is valid documented frontmatter syntax.

Content conventions should apply only where intended. The proposed option cannot provide the specific “Validate the supported rule front matter syntax and expected paths fields” behavior that the case requires. A misspelled frontmatter key prevents the runtime from recognizing intended path matching.

A Python-only glob is not the root problem when a scoped rule header misspells the path key. Correct and validate the supported YAML frontmatter field first. A perfect filename expression under an unrecognized key will never be applied as intended.