huge documentaton restructure for docusaurus

docs/process/README.md

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+# Process & Planning Hub
+
+This directory centralizes living planning artefacts that previously sat in scattered folders.
+
+## Structure
+
+- `changes/` — dated session logs, retro notes, and ad-hoc findings. Drop a new Markdown file per session (`YYYY-MM-DD-topic.md`) and reference it from epics when relevant.
+- `todo/` — backlog of active epics or initiatives. Each file focuses on a single problem space (e.g. `security-hardening-epic.md`) and contains goals, status, and actionable checklists.
+- `roadmap.md` — top-level view that summarizes what is in progress, what is queued up next, and which epics have been completed recently.
+
+## Workflow
+
+1. After every planning or incident-review session, capture the outcome in `changes/`.
+2. Update the relevant `todo/*.md` files with new tasks, decisions, or links back to change logs.
+3. Keep `roadmap.md` in sync with the current quarter’s priorities so product/ops can scan it quickly.
+4. When an initiative is completed and no longer useful operationally, move its Markdown file to `docs/archive/` to keep the active backlog lightweight.
+
+> Tip: Link to concrete specs (PRP chapters, ops runbooks) from each epic so contributors know where implementation details live.