Add operational runbooks and decisions stub

docs/02-runbooks/session_start_workflow.md

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+# Session Start Workflow
+
+## Purpose
+Start each implementation session with correct scope, context, and task state before editing files.
+
+## Inputs
+- Current priority task from Archon.
+- Governance docs in `docs/00-governance/`.
+
+## Steps
+1. Open and read in order:
+   - `docs/00-governance/executive_summary.md`
+   - `docs/00-governance/current_status.md`
+   - `docs/00-governance/active_work.md`
+   - `docs/00-governance/architecture.md`
+   - `docs/00-governance/roadmap.md`
+2. Pull current task details from Archon and confirm acceptance criteria.
+3. Confirm allowed file scope from task spec and `.kilocode/rules/file_boundaries.md`.
+4. Move task status in Archon from `todo` to `doing`.
+5. Capture a short execution plan (3-6 bullets) tied to acceptance criteria.
+6. Begin implementation with minimum-diff edits only in scoped files.
+
+## Exit Criteria
+- Task is set to `doing`.
+- Scope boundaries are explicitly confirmed.
+- Work plan exists and maps to task acceptance criteria.