feat(remediation): add guided fix and verify commands

[msaad00]

Summary

• add guided remediation fix and verification commands to compact and JSON output
• share command construction and shell-safety logic through a dedicated helper
• simplify the README with collapsible sections and remove stale dashboard-detail phrasing
• tighten Docker Hub copy so the blast-radius story and backed claims are clearer

Validation

• UV_CACHE_DIR=/tmp/agent-bom-uv-cache uv run pytest -q tests/test_compact_output.py tests/test_core.py tests/test_remediate.py
• UV_CACHE_DIR=/tmp/agent-bom-uv-cache uv run ruff check src/agent_bom/remediation_commands.py src/agent_bom/remediate.py src/agent_bom/output/init.py src/agent_bom/output/json_fmt.py tests/test_compact_output.py tests/test_core.py tests/test_remediate.py README.md DOCKER_HUB_README.md
• UV_CACHE_DIR=/tmp/agent-bom-uv-cache uv run python scripts/check_release_consistency.py

Notes

• prominent README counts were rechecked against code before packaging this PR: 15 ecosystems, 65 MITRE ATLAS techniques, 8 runtime detectors, and 36 MCP tools
• the PyPI badge URL now includes a cache parameter to help flush stale 0.75.11 storefront badges faster