feat: add status notifier adapters

[iKwesi]

Summary

• add provider-agnostic status notifier adapters with a concrete webhook notifier
• emit pull request status events from runStatus with delivery failure isolation
• wire the status CLI to optional --notify-webhook adapters and report notification outcomes

Closes #47

[Copilot]

Pull request overview

Adds a provider-agnostic status notification layer to SpecForge status reporting, including a webhook notifier adapter, and wires it through runStatus and the sf status CLI command with delivery failure isolation.

Changes:

• Introduces StatusNotifier contracts plus a concrete webhook notifier and an emitStatusNotification helper.
• Extends runStatus / formatStatusReport to emit and display notification delivery outcomes without failing the status flow.
• Adds --notify-webhook (repeatable) to the status CLI and updates tests for notifier behavior/output.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/core/notifiers/statusNotifiers.ts	New notifier interfaces + webhook implementation + delivery isolation helper.
src/core/diagnostics/status.ts	Integrates notification emission into runStatus and prints delivery results in the report.
src/cli.ts	Adds --notify-webhook option and maps URLs to webhook notifier adapters.
tests/notifications/status-notifiers.test.ts	New unit tests for webhook delivery, failure isolation, and invalid URL handling.
tests/diagnostics/status.test.ts	Updates runStatus tests to validate emitted events and delivery results (success/failure).
tests/cli/status-command.test.ts	Updates CLI status command test to cover notifier wiring and output.

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[Copilot]

Pull request overview

Adds a provider-agnostic notification layer for PR status events, including a concrete webhook notifier, and wires it into runStatus and the CLI so status events can be emitted without breaking the primary status flow on delivery failures.

Changes:

• Introduces StatusNotifier adapter contract + emitStatusNotification() orchestration and a webhook-based notifier implementation.
• Extends runStatus/formatStatusReport to emit and render notification delivery outcomes.
• Adds --notify-webhook to the status CLI command and updates tests to cover notifier behavior and failure isolation.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/core/notifiers/statusNotifiers.ts	New notifier contracts, webhook adapter, and delivery fan-out logic.
src/core/diagnostics/status.ts	Integrates notifier emission into runStatus and prints delivery results in the report.
src/cli.ts	Adds --notify-webhook option and maps CLI inputs into webhook notifier instances.
tests/notifications/status-notifiers.test.ts	Verifies webhook payload/headers, URL validation, whitespace trimming, and failure isolation.
tests/diagnostics/status.test.ts	Ensures runStatus emits notification events and remains successful on delivery failure.
tests/cli/status-command.test.ts	Ensures CLI wires --notify-webhook into runStatus input and prints notification outcomes.

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[Copilot]

Pull request overview

Adds a pluggable notification layer for PR status events, including a concrete webhook notifier, and wires notifications into the status diagnostics flow and CLI command.

Changes:

• Introduces provider-agnostic status notifier contracts plus a webhook-based notifier implementation.
• Emits pull_request_status events from runStatus with per-notifier failure isolation and result reporting.
• Adds sf status --notify-webhook <url> to configure webhook notifications and prints delivery outcomes.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/core/notifiers/statusNotifiers.ts	New notifier adapter contracts, webhook notifier, and event emission helper with isolated failures.
src/core/diagnostics/status.ts	Emits status events during runStatus and prints notification deliveries in reports.
src/cli.ts	Adds --notify-webhook option, creates webhook notifiers, and passes them into runStatus.
tests/notifications/status-notifiers.test.ts	New unit tests covering webhook adapter behavior, validation, and concurrency ordering.
tests/diagnostics/status.test.ts	Extends runStatus tests to assert notifier invocation and delivery reporting.
tests/cli/status-command.test.ts	Updates CLI test to pass --notify-webhook and assert notifier wiring + output.

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[Copilot]

Pull request overview

Adds a provider-agnostic status notification adapter layer and wires it into the status diagnostic/CLI so pull request status events can be emitted asynchronously (with per-adapter delivery isolation), including a concrete webhook notifier.

Changes:

• Introduces StatusNotifier contracts + emitStatusNotification and a createWebhookStatusNotifier implementation.
• Extends runStatus/formatStatusReport to emit and display notification delivery outcomes.
• Adds sf status --notify-webhook <url> support (repeatable) and corresponding test coverage.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/notifications/status-notifiers.test.ts	Adds unit tests for webhook notifier behavior, validation, and delivery isolation/concurrency.
tests/diagnostics/status.test.ts	Verifies runStatus emits status events to notifiers and preserves success on delivery failures.
tests/cli/status-command.test.ts	Ensures --notify-webhook is parsed and notifications appear in CLI output.
src/core/notifiers/statusNotifiers.ts	Implements notifier types, webhook adapter, URL/id normalization, and concurrent delivery emission.
src/core/diagnostics/status.ts	Integrates optional notifier emission into runStatus and renders notification results in reports.
src/cli.ts	Adds --notify-webhook option and wires it to webhook notifier creation.

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