feat: add bitbucket comments and build status

[LichKing-2234]

Summary

• add Bitbucket PR comment list/get/add/reply/edit/delete commands
• add PR and commit build-status commands with normalized output
• document the new commands and register live e2e coverage ownership

Test Plan

• PYTHONPATH=src /Users/admin/atlassian-cli/.venv/bin/ruff format --check .
• PYTHONPATH=src /Users/admin/atlassian-cli/.venv/bin/python -m pytest -q
• PYTHONPATH=src /Users/admin/atlassian-cli/.venv/bin/ruff check README.md pyproject.toml src tests docs

[Copilot]

Pull request overview

Adds new Bitbucket workflow commands to the Atlassian CLI for managing PR comments and inspecting build statuses, while keeping existing PR metadata commands lightweight.

Changes:

• Introduces bitbucket pr comment subcommands (list/get/add/reply/edit/delete) with normalized output and raw modes.
• Adds build status inspection via bitbucket pr build-status and bitbucket commit build-status.
• Updates schemas, provider interfaces/implementation, docs, and unit/e2e coverage ownership.

Reviewed changes

Copilot reviewed 21 out of 21 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/test_readme.py	Asserts README includes examples for new comment/build-status commands.
tests/products/bitbucket/test_schemas.py	Adds schema tests for comment + build status normalization.
tests/products/bitbucket/test_provider.py	Adds provider tests for comment and build-status SDK forwarding.
tests/products/bitbucket/test_pr_comment_service.py	Unit tests for PR comment service normalization + raw passthrough.
tests/products/bitbucket/test_pr_comment_command.py	CLI tests for bitbucket pr comment ... commands, including --version enforcement.
tests/products/bitbucket/test_build_status_service.py	Unit tests for build status aggregation and error handling.
tests/products/bitbucket/test_build_status_command.py	CLI tests for pr build-status and commit build-status.
tests/e2e/test_bitbucket_live.py	Extends live Bitbucket round-trip e2e to exercise new commands.
tests/e2e/coverage_manifest.py	Registers new leaf commands for live e2e ownership tracking.
src/atlassian_cli/products/bitbucket/services/pr_comment.py	Implements comment normalization and raw methods.
src/atlassian_cli/products/bitbucket/services/build_status.py	Implements commit/PR build status normalization and aggregation logic.
src/atlassian_cli/products/bitbucket/schemas.py	Adds comment and build-status related API models.
src/atlassian_cli/products/bitbucket/providers/server.py	Implements Server/DC provider methods for comments, commits, and build statuses.
src/atlassian_cli/products/bitbucket/providers/base.py	Extends Bitbucket provider protocol with new operations.
src/atlassian_cli/products/bitbucket/commands/pr.py	Registers pr comment group and adds pr build-status command.
src/atlassian_cli/products/bitbucket/commands/pr_comment.py	New Typer command group for PR comment operations.
src/atlassian_cli/products/bitbucket/commands/commit.py	New Typer command group for commit build-status.
src/atlassian_cli/cli.py	Wires the new Bitbucket commit command group into the root CLI.
README.md	Documents new commands and expected behaviors.
docs/superpowers/specs/2026-05-08-atlassian-cli-bitbucket-pr-comments-build-status-design.md	Design spec for the added Bitbucket capabilities.
docs/superpowers/plans/2026-05-08-atlassian-cli-bitbucket-pr-comments-build-status.md	Implementation plan and verification checklist.

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