Port e2e tests from hyades repository

[nscuro]

Description

Ports e2e tests from hyades repository.

Addressed Issue

N/A

Additional Details

N/A

Checklist

• I have read and understand the contributing guidelines
• This PR fixes a defect, and I have provided tests to verify that the fix is effective
• This PR implements an enhancement, and I have provided tests to verify that it works as intended
• This PR introduces changes to the database model, and I have updated the migration changelog accordingly
• This PR introduces new or alters existing behavior, and I have updated the documentation accordingly

[Copilot]

Pull request overview

This PR ports end-to-end tests from the hyades repository into the main project. It introduces a new e2e Maven module that uses Testcontainers to spin up PostgreSQL and the API server, with Feign for API interaction, WireMock for webhook verification, and GreenMail for email testing.

Changes:

• Adds a new e2e Maven module with an abstract base test class, Feign-based API client, model records, and five e2e test classes covering BOM upload processing, vulnerability analysis (internal, Snyk, OSS Index), notification workflows, and vulnerability policies.
• Adds OpenFeign BOM to the parent pom.xml dependency management.
• Adds Makefile target and documentation for running e2e tests.

Reviewed changes

Copilot reviewed 33 out of 34 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
pom.xml	Adds e2e module and OpenFeign BOM to dependency management
e2e/pom.xml	New module POM with test dependencies and failsafe plugin config
e2e/src/main/java/.../api/ApiClient.java	Feign API client interface for DT API
e2e/src/main/java/.../api/ApiAuthInterceptor.java	Auth interceptor supporting bearer token and API key
e2e/src/main/java/.../api/CompositeDecoder.java	Response decoder with JSON and text support
e2e/src/main/java/.../api/CompositeEncoder.java	Request encoder with JSON and form-urlencoded support
e2e/src/main/java/.../api/model/*.java	Record classes for API request/response models
e2e/src/test/java/.../AbstractE2ET.java	Base test class managing containers and API client setup
e2e/src/test/java/.../BomUploadProcessingE2ET.java	E2E test for BOM upload with webhook and email notifications
e2e/src/test/java/.../BomUploadSnykAnalysisE2ET.java	E2E test for Snyk vulnerability analysis
e2e/src/test/java/.../BomUploadOssIndexAnalysisE2ET.java	E2E test for OSS Index vulnerability analysis
e2e/src/test/java/.../BomProcessedNotificationDelayedE2ET.java	E2E test for delayed BOM_PROCESSED notifications
e2e/src/test/java/.../VulnerabilityPolicyE2ET.java	E2E test for vulnerability policy lifecycle
e2e/src/test/resources/*	Test resources (BOM file, logger config)
Makefile	Adds test-e2e target
DEVELOPING.md, AGENTS.md	Documents e2e test execution

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[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +1.39% (target: -1.00%)	✅ ∅ (target: 70.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (1e497bd)	32770	27399	83.61%
Head commit (bb489f5)	26446 (-6324)	22478 (-4921)	85.00% (+1.39%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1884)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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