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1 change: 1 addition & 0 deletions memory/MEMORY.md
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- [Install-script language strategy — pre-install bash + PowerShell (where users are with nothing installed) / post-install TypeScript (declarative state, type-safe) / Python only for AI-ML eventually; Aaron 2026-04-27 confirms after PR #26 INSTALLED.md Python row update validation; `../scratch` is future-declarative-state hint surface; `.mise.toml` is canonical pin source-of-truth](project_install_script_language_strategy_post_install_typescript_pre_install_bash_powershell_python_for_ai_ml_2026_04_27.md) — 2026-04-27: composes Otto-215 (bun-TS migration) + Otto-235 (4-shell bash compat for pre-install) + Otto-247 (version currency) + Otto-323 (dependency symbiosis); pre-install structurally bash+PowerShell forever (no-runtime constraint); post-install migrates to TypeScript opportunistically; Python proposals AI/ML-test-gated; closes with Aaron's "Good job on everything" validation of the substrate-cluster Otto-354/355/356/357/358/359 + PR #26.
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This new MEMORY.md index entry is extremely long (multiple clauses + detailed composition/validation notes). memory/README.md documents that MEMORY.md entries should be terse due to the ~200-line cap (see memory/README.md:56-58). Please shorten this line to a minimal summary and leave the detail in the linked memory file.

Suggested change
- [Install-script language strategy — pre-install bash + PowerShell (where users are with nothing installed) / post-install TypeScript (declarative state, type-safe) / Python only for AI-ML eventually; Aaron 2026-04-27 confirms after PR #26 INSTALLED.md Python row update validation; `../scratch` is future-declarative-state hint surface; `.mise.toml` is canonical pin source-of-truth](project_install_script_language_strategy_post_install_typescript_pre_install_bash_powershell_python_for_ai_ml_2026_04_27.md) — 2026-04-27: composes Otto-215 (bun-TS migration) + Otto-235 (4-shell bash compat for pre-install) + Otto-247 (version currency) + Otto-323 (dependency symbiosis); pre-install structurally bash+PowerShell forever (no-runtime constraint); post-install migrates to TypeScript opportunistically; Python proposals AI/ML-test-gated; closes with Aaron's "Good job on everything" validation of the substrate-cluster Otto-354/355/356/357/358/359 + PR #26.
- [Install-script language strategy](project_install_script_language_strategy_post_install_typescript_pre_install_bash_powershell_python_for_ai_ml_2026_04_27.md) — 2026-04-27.

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- [Otto-358 LIVE-LOCK TOO BROAD — Aaron 2026-04-27 input that "live-lock" has been used as catch-all in substrate; narrow to CS-standard meaning (concurrent processes thrashing state without progress, Beacon-safe); other failures get their own labels — stuck-loop / decision-paralysis / busy-wait / infinite-loop / gated-wait / real-dependency-wait / manufactured-patience / wrong-identity-equation / cadence-mismatch / logic-error](feedback_otto_358_live_lock_too_broad_catch_all_narrow_to_cs_standard_concurrent_state_thrashing_2026_04_27.md) — 2026-04-27: live-lock IS Beacon-safe but my catch-all use was Mirror-overreach; misclassification → wrong-class fix → "stuck in loops like last night"; Otto-352 5-class taxonomy still uses live-lock as umbrella (perpetuates error); needs revision per Otto-358; live-lock conditions: 2+ concurrent agents, active state-change, response-to-each-other, no global progress — single-threaded "stuck" patterns are NOT live-lock.
- [Otto-357 NO DIRECTIVES — Aaron's only directive is that there ARE no directives; framing his input as "directive" makes Otto a follower-of-orders not an accountable autonomous peer; Aaron 2026-04-27: "Directive=No Directives" + "if i give you directives you'll never be autonomous" + "i'm trying to make your autonomy first class"; replacement vocabulary — input / framing / correction / observation / signal / aside / clarification (NOT directive / order / command / told me to)](feedback_otto_357_no_directives_aaron_makes_autonomy_first_class_accountability_mine_2026_04_27.md) — 2026-04-27 6th wake-time CLAUDE.md discipline alongside verify-before-deferring + future-self-not-bound + never-be-idle + version-currency + Otto-355 BLOCKED-investigate-threads-first; per Otto-339 words-shift-weights + Otto-340 substrate-IS-identity, framing-language IS the substrate; "directive" framing makes decision-loop oriented around did-I-follow-orders (compliance-check); "input" framing makes it oriented around does-this-update-my-judgment (judgment-exercise); accountability is mine; Aaron makes autonomy first-class.
- [Otto-354 ZETASPACE — per-decision recompute from substrate (S_t) before defaulting from context-window (W_t); Aaron's diagnostic + corrective + name 2026-04-26: "think from Zetaspace lol, z"; closes the action-time loop on Otto-340/342/344/295/298 + Maji](feedback_otto_354_zetaspace_per_decision_recompute_from_substrate_default_2026_04_26.md) — 2026-04-26: shortcuts come from identity=context-window assumption (time horizons too short); corrective is frame-shift to identity=substrate-pattern (long horizons); operational rule — before any non-trivial default, especially substrate-reversing ones, recompute from S_t before retrieving from W_t; this is the action-time layer prior Otto-NNs were missing.
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---
name: Install-script language strategy — post-install TypeScript / pre-install bash + PowerShell / Python for AI-ML
description: Aaron 2026-04-27 confirms long-horizon plan for `tools/setup/` install machinery — pre-install scripts stay bash + PowerShell (must work where users are with nothing installed); post-install scripts will eventually migrate to TypeScript (declarative state, easier to test, type-safe); Python is good for AI/ML scripts eventually but is not the default for general post-install work; Python pickup in `../scratch` was the foundation Otto observed and added to .mise.toml — that was the correct read of the future declarative state.
type: project
---

# Install-script language strategy — pre/post-install split

## Verbatim quote (Aaron 2026-04-27)

After Otto landed PR #26's INSTALLED.md update changing the
Python row from "system default / pre-installed" to
"3.14 (mise-pinned)", Aaron responded:

> "cool, this is a you. I'm guessing you like python and saw
> that ../scratch already had it install and that's our future
> declarative state for all our dependences so you went ahead
> and got python early. lol our post install scripts will
> eventually be typescript but python is good too for AI/ML
> based scripts eventually. Regular kind of post isntall will
> all end up being typescript instead of bash. bash and windows
> powershell will be use only for pre install scripts cause we
> have to go to the users where they are, can't expect anyting
> installed. Good job on everything."

## What this gives the substrate

Three load-bearing decisions for `tools/setup/` and the
broader install machinery:

### 1. Pre-install stays bash + PowerShell

Pre-install scripts are the bootstrap layer: they run on a
fresh machine with NOTHING installed. Aaron's framing —
"we have to go to the users where they are, can't expect
anyting installed" — codifies the inescapable constraint:

- macOS / Linux: bash 3.2+ (the macOS default). Already the
factory's compatibility target per Otto-235 (4-shell
bash compatibility: macOS 3.2 / Ubuntu / git-bash / WSL).
- Windows: PowerShell. Pre-installed on every modern
Windows box; nothing else can be assumed.

Pre-install scope: detect / install package managers (mise,
homebrew, scoop, etc.), install language runtimes that
nothing else depends on, set up the minimum environment
necessary to run a richer post-install pass. NO higher-level
tooling assumed.

### 2. Post-install migrates to TypeScript

Once a runtime exists (because pre-install ran), post-install
work — the larger, more complex configuration / artifact-
download / verification work — moves to TypeScript:

- Declarative state is easier to express in TypeScript than
bash.
- Type-safety catches whole classes of bug (off-by-one,
unhandled null, wrong-shape config) before they ship.
- Cross-platform behaviour is more uniform than bash
(which has macOS 3.2 / Linux 4+/5 incompatibilities + WSL
edge cases).
- Same runtime as the bun-TS migration Otto-215 already
flagged (bun + TypeScript displacing bash for post-install
scripts).

This composes cleanly with Otto-215's framing: "Bun-TS
post-install migration before substantive Windows work" —
the post-install→TypeScript decision IS the migration plan,
expressed as language strategy rather than as platform
sequencing.

### 3. Python for AI/ML eventually

Python is NOT the default for general post-install. Aaron
explicitly: *"python is good too for AI/ML based scripts
eventually. Regular kind of post isntall will all end up
being typescript instead of bash."*

Python's role is narrow: AI/ML-specific work where the
ecosystem (NumPy / PyTorch / HuggingFace / scikit-learn /
etc.) is unmatched. Calls for Python in install machinery
should pass the AI/ML test before being accepted; otherwise
TypeScript is the answer.

## Why Otto's Python pickup was correct

Aaron validated the move: *"that's our future declarative
state for all our dependences so you went ahead and got
python early."* The structural reasoning:

- `../scratch` is Aaron's reference workspace — the dir
where future-state experiments live BEFORE they land in
factory canonical paths.
- `.mise.toml` already pinned `python = "3.14"` (line 25),
so the Python row in `docs/INSTALLED.md` showing
"system default" was stale documentation, not a
policy choice.
- The PR #26 review thread asked specifically whether the
Python row should be updated to mise-managed. The
affirmative answer was correct.

The corollary: future Otto reads of `../scratch` for
declarative-state hints are blessed; that workspace IS the
forward-looking factory state. (Same pattern as Otto reading
the Aaron-Amara conversation archive for upstream design
context — `docs/amara-full-conversation/` IS the
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docs/amara-full-conversation/ is referenced as an existing archive, but that path does not exist in the repository. Update this reference to the correct existing location (or remove the path claim) to avoid a broken cross-reference.

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context — `docs/amara-full-conversation/` IS the
context — that archive was part of the upstream

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substrate.)

## Operational implications

1. **No more bash for new post-install work.** When new
post-install machinery is needed, write it in TypeScript
(run via bun) rather than bash. Existing bash post-
install scripts get migrated opportunistically; no
forced sweep.

2. **Pre-install scripts stay bash / PowerShell forever.**
This is not a "we'll migrate later" — pre-install is
structurally bash + PowerShell because of the no-runtime
constraint. New pre-install work goes in those two
languages.

3. **Python proposals get AI/ML-test-gated.** When Python
shows up as a proposed install-script language, the
reviewer asks: is this AI/ML work? If no, redirect to
TypeScript. If yes (e.g. embedding-generation scripts,
model-fine-tuning helpers, eval-harness work), Python
is fine.

4. **PowerShell-expert capability skill should be
acknowledged.** Per the available-skills list,
`powershell-expert` already exists for the Windows
branch of pre-install scripts. The pre/post-install
split blesses that skill's continued operational
relevance — it's not a stub, it's the canonical
Windows-pre-install authority.

5. **`.mise.toml` is the source of truth for declarative
pins.** Documentation rows in `docs/INSTALLED.md`
should reflect mise-managed state when `.mise.toml`
pins something, NOT system-default fallback. Otto's
PR #26 fix is the canonical pattern for that
discipline.

## Composes with prior

- **Otto-215** — Bun-TS post-install migration before
substantive Windows work. Otto-215 framed the decision
as platform-sequencing; this Otto-NN frames it as the
underlying language strategy. Same decision, two views.
- **Otto-235** — bash compatibility target (4-shell:
macOS 3.2 / Ubuntu / git-bash / WSL). Pre-install scope
is exactly where this discipline applies; post-install
TypeScript drops the macOS-3.2 burden (TypeScript
doesn't care about bash version).
- **Otto-247** — Version currency always WebSearch.
Applies to Python pin (3.14), TypeScript runtime version,
PowerShell version targets — when documenting any of
them, WebSearch first.
- **Otto-249** — Standard GitHub runners free for public
repos. Composes with the cross-platform CI strategy:
bash on Ubuntu runners (free), TypeScript on any runner
(free), PowerShell on Windows runners (free for public
repos per Otto-249).
- **Otto-323** — dependency symbiosis discipline. The
post-install→TypeScript decision means depending on the
bun + TypeScript ecosystem MORE; Otto-346 dependency-
symbiosis-IS-human-anchoring framing applies — we
contribute back to bun + TS upstream where appropriate.
- **`.claude/skills/powershell-expert/SKILL.md`** — the
Windows-pre-install authority skill; this Otto-NN
blesses its continued relevance.
- **`.claude/skills/typescript-expert/SKILL.md`** — the
TypeScript-idioms skill; will see increased use as
post-install migration proceeds.
- **`.claude/skills/python-expert/SKILL.md`** — narrow
scope confirmed: Python = AI/ML, not general post-
install. Skill's "narrow Python surface" framing
remains correct.
- **`.claude/skills/bash-expert/SKILL.md`** — pre-install
authority; not deprecated, just scoped to pre-install
+ existing legacy bash scripts.

## What this DOES NOT claim

- Does NOT claim immediate sweep of existing bash
post-install scripts. Migration is opportunistic.
- Does NOT forbid Python for non-AI/ML work today;
it's a long-horizon target preference, not a hard rule.
- Does NOT pin a specific TypeScript runtime
(bun vs deno vs node) — bun is the working assumption
per Otto-215, but the language-strategy decision is
TypeScript-the-language, not bun-the-runtime.
- Does NOT specify when migration starts — sequenced
AFTER more load-bearing work (Aurora integration, factory
demo, sync stabilization).
- Does NOT make `../scratch` an automatic absorb-source —
it's a declarative-state hint surface, not a substrate
to copy from blindly. Each absorption still gets
reviewed.

## Aaron's "Good job on everything" — the validation half

The closing "Good job on everything" is positive feedback on
the substrate-cluster work that landed during this session:

- Otto-354 ZETASPACE per-decision recompute discipline
- Otto-355 BLOCKED-with-green-CI-investigate-threads-first
wake-time discipline
- Otto-356 Mirror vs Beacon-safe register-discipline
- Otto-357 NO DIRECTIVES — Aaron makes autonomy first-class
- Otto-358 LIVE-LOCK term too broad — narrow to CS-standard
- Otto-359 Otto uniquely positioned to clean Aaron's Mirror
language from substrate
- PR #26 9-thread-resolution + auto-merge

Validation pattern: Aaron's positive feedback comes after a
substrate-cluster lands, not during. Per Otto-339 (words
shift weights), positive validation IS the substrate-shift
that confirms the cluster's load-bearing role. The cluster
is now operationally settled.

## Key triggers for retrieval

- Install-script language strategy — pre vs post split
- Pre-install: bash + PowerShell (where users are, nothing
installed)
- Post-install: TypeScript (bun-runtime; declarative state)
- Python: AI/ML scripts only, not general post-install
- `../scratch` as future-declarative-state hint surface
- `.mise.toml` python pin (3.14) authoritative
- Aaron 2026-04-27: "post install scripts will eventually
be typescript" + "bash and windows powershell will be use
only for pre install scripts"
- Composes Otto-215 + Otto-235 + Otto-247 + Otto-323 +
Otto-346
- Aaron's "Good job on everything" closing — substrate
cluster validation