Add portable Codex ops kit

memory/README.md

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+# Portable Memory
+
+These markdown files are the durable layer you can sync across machines.
+
+## What Belongs Here
+
+- user preferences that stay true across projects
+- stable workflow conventions
+- active project summaries
+- important decisions worth remembering later
+
+## What Does Not Belong Here
+
+- secrets
+- API keys
+- giant transcript dumps
+- temporary debugging notes
+- anything that is likely to be stale within a day or two
+
+## Operating Principle
+
+Short, curated memory beats large raw history.

memory/active-projects.md

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+# Active Projects
+
+## Codex Ops Kit
+
+- Purpose: make Codex cheaper to run, easier to resume, and easier to share across machines.
+- Core components: profile-based config, short global instructions, portable memory markdown, and maintenance scripts.
+- Important constraint: portable assets should exclude secrets and large transient databases.

memory/architecture-decisions.md

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+# Architecture Decisions
+
+## Separate Durable Memory From Transcript History
+
+Durable preferences and project summaries live in curated markdown files.
+
+Large session JSONL files are treated as archival evidence that can be summarized or archived, not as the primary continuity layer.
+
+## Prefer Profiles Over One Global Setting
+
+There is no single best cost/performance configuration for every task. This kit uses `economy`, `balanced`, and `deep` profiles so the user can pick the right tradeoff quickly.
+
+## Keep Instruction Files Lean
+
+Small, targeted `AGENTS.md` files improve efficiency more reliably than giant all-purpose prompt files.

memory/user-profile.md

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+# User Profile
+
+- Prefers Codex setups that are portable and Git-friendly.
+- Wants lower token and credit usage by default without losing the option to do deeper work when needed.
+- Wants Codex to retain durable context so recurring setup explanations are minimized.
+- Prefers practical systems that can be shared with other Codex instances on other machines.

memory/workflow-preferences.md

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+# Workflow Preferences
+
+- Default to a balanced cost/performance profile for everyday work.
+- Use cheaper profiles for small edits, reviews, and narrow tasks.
+- Reserve higher reasoning settings for architecture, hard debugging, or multi-file refactors.
+- Keep always-loaded instructions short.
+- Distill reusable knowledge into markdown memory notes after substantial work.
+- Periodically audit local Codex storage and archive old session transcripts instead of relying on them as memory.