v0.4.0

Changelog

• 75e7442 Merge pull request #11 from weside-ai/feat/WA-887-companion-update-delete
• 38f295d Merge pull request #7 from weside-ai/dependabot/github_actions/actions/setup-node-6
• a15218b Merge pull request #8 from weside-ai/fix/memory-source-cli
• f776091 ci: bump actions/setup-node from 4 to 6
• 849de26 ci: pin govulncheck to v1.1.4 (latest requires go 1.25+)
• e19fb7a feat(companions): add update, delete commands and extend show
• 4ce1bfe fix(client): send X-Weside-Client: cli header
• 2bd33d2 refactor(companions): simplify delete and fix test reliability
• 0731ce4 test(companions): add missing plan-required tests + fix doc files
• 4e32a5a test(companions): fix CodeRabbit nitpicks — real RunE tests, remove placeholders