Streamline agent init and clarify workflow actions

[AshwaniKharwar]

Summary

Improve the default agent workflow so a full tldrgraph init run proceeds automatically in detected coding-agent sessions, requires evidence-backed LLM route-link completion, and presents workflow actions in clearer plain language.

Scope

• Auto-approve full enrichment campaigns in coding-agent sessions while retaining confirmation for normal terminals and partial runs.
• Treat needs_llm_links as a required continuation state unless explicitly disabled.
• Improve workflow labels, summaries, and call resolution so diagrams use understandable actions and avoid ambiguous calls such as browser fetch.
• Add regression coverage for initialization, BPMN workflow data, and visualizer behavior.

Acceptance criteria

• A full agent-session tldrgraph init run advances without an initial confirmation prompt.
• A failed route-link inference produces the required manual handoff.
• Workflow views use intent-aware action labels and do not resolve ambiguous built-ins to unrelated project symbols.
• Relevant test coverage passes.