[webhooks] configurable action keywords

[capcom6]

Summary by CodeRabbit

• New Features
  • Added WEBHOOKS__ACTION_KEYWORDS to configure commit-message keywords (with status-driven transitions) for webhook automation.
  • Supports case-insensitive keyword matching, keyword-qualified and bare #<number> references, and deduplicates references by task number.
  • Extended webhook environment template with bot email and WEBHOOKS__SECRET.
• Bug Fixes
  • Improved validation and error handling for signature issues and malformed/invalid keyword/status configurations.
• Documentation
  • Updated the environment template with the required JSON mapping format, parsing rules, valid statuses, and examples.

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No actionable comments were generated in the recent review. 🎉

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Reviewing files that changed from the base of the PR and between 972be95 and bd09440.

📒 Files selected for processing (1)

• .env.example

🚧 Files skipped from review as they are similar to previous changes (1)

• .env.example

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📝 Walkthrough

Walkthrough

Webhook handling now supports configurable commit-message keywords that map task references to status transitions. Configuration, parser validation and matching, error definitions, and webhook service initialization are updated.

Changes

Configurable webhook parsing

Layer / File(s)	Summary
Webhook configuration contract .env.example, internal/config/config.go, internal/config/module.go, internal/webhooks/config.go	Webhook settings now include documented keyword mappings, typed keyword entries, default actions, and service wiring.
Keyword parser and validation internal/webhooks/parser.go, internal/webhooks/domain.go, internal/webhooks/errors.go	Commit parsing moved into a configurable parser that validates statuses, matches keyword-qualified and bare task references, deduplicates task numbers, and defines webhook parsing errors.
Service parser initialization and processing internal/webhooks/service.go	The service builds the parser during initialization and uses it to parse commit messages during processing.

Estimated code review effort: 4 (Complex) | ~45 minutes

Sequence Diagram(s)

sequenceDiagram
  participant WebhookService
  participant KeywordParser
  participant TaskReferences
  WebhookService->>KeywordParser: ParseCommitMessage(commit message)
  KeywordParser->>TaskReferences: Extract keyword-qualified and bare task references
  KeywordParser-->>WebhookService: Return ParsedReference entries with actions

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Possibly related PRs

• bit-issues/backend#33: Introduced the earlier webhook parsing and service flow that this configurable parser refactors.
• bit-issues/backend#40: Expanded webhook commit-message keyword variants related to the configurable action mappings.

Suggested reviewers: dudina-ma

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 40.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: making webhook action keywords configurable.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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🤖 Pull request artifacts

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🐳 Docker	GitHub Container Registry
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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@internal/webhooks/parser.go`:
- Around line 41-42: Validate entries in NewKeywordParser before compiling
patterns, rejecting or skipping any keyword whose string is empty after
normalization. Ensure empty keywords cannot produce regex alternatives or
receive an action, while preserving existing handling for valid keywords.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: e252844d-3466-4ddc-9218-a09ebf7b62e5

📥 Commits

Reviewing files that changed from the base of the PR and between 8d80806 and def92f1.

📒 Files selected for processing (8)

• .env.example
• internal/config/config.go
• internal/config/module.go
• internal/webhooks/config.go
• internal/webhooks/domain.go
• internal/webhooks/errors.go
• internal/webhooks/parser.go
• internal/webhooks/service.go

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.env.example:
- Around line 249-260: Set WEBHOOKS__ACTION_KEYWORDS in .env.example to the
documented default JSON object instead of leaving it empty, preserving all
listed keyword-to-status transitions and optional verbs so copied environments
retain the built-in webhook behavior.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 6a1746aa-cbe7-45a6-8cb9-cb09a2cd59e0

📥 Commits

Reviewing files that changed from the base of the PR and between c8fb669 and 972be95.

📒 Files selected for processing (8)

• .env.example
• internal/config/config.go
• internal/config/module.go
• internal/webhooks/config.go
• internal/webhooks/domain.go
• internal/webhooks/errors.go
• internal/webhooks/parser.go
• internal/webhooks/service.go

🚧 Files skipped from review as they are similar to previous changes (7)

• internal/webhooks/errors.go
• internal/config/module.go
• internal/webhooks/config.go
• internal/webhooks/domain.go
• internal/config/config.go
• internal/webhooks/service.go
• internal/webhooks/parser.go