> ## Documentation Index
> Fetch the complete documentation index at: https://helloluciallc.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Use This Canon

<Note>
  This Canon is an operating system for Lucia’s product, engineering, and launch truth.
</Note>

***

## For New Readers

Start here:

1. [00 - START HERE - Lucia System](/lucia/start-here-lucia-ai/start-here-lucia-system)
2. [00 - Lucia Mission and Mandate](/lucia/foundation/lucia-mission-and-mandate)
3. [00 - START HERE - System Architecture](/lucia/system-architecture/start-here-system-architecture)
4. [00 - START HERE - Intelligence Layer](/lucia/intelligence/start-here-intelligence-layer)
5. [00 - START HERE - Operations](/lucia/operations/start-here-operations)

***

## For Engineering Work

Use:

```text theme={"dark"}
10 System Architecture
20 Intelligence
40 Operations
50 Infrastructure
80 Decisions
```

Engineering notes must name:

```text theme={"dark"}
repo
environment
runtime layer
source file
truth state
```

***

## For Product Work

Use:

```text theme={"dark"}
00 Foundation
20 Intelligence
30 Evaluation
40 Operations
60 Product (future)
```

Product changes must preserve:

```text theme={"dark"}
operator calm
truth-state discipline
permission-based action
stable response contract
```

***

## For Launch Work

Use:

```text theme={"dark"}
50 Infrastructure
70 Roadmap
85 Releases
02 - Current System State
```

Launch notes must distinguish:

```text theme={"dark"}
implemented
tested
configured
deferred
future
```

***

## What Not To Do

Do not use the Canon as:

```text theme={"dark"}
chat archive
scratchpad
pitch deck
temporary parking lot
```

If a note is temporary, put it in:

```text theme={"dark"}
99 Archives
```

or move it to a personal vault.

***

## See Also

* [Historical Obsidian Canon Map](/lucia/start-here-lucia-ai/canon-map)
* [05 - Canon Update Ritual](/lucia/start-here-lucia-ai/canon-update-ritual)
* [Lucia Decision Log](/lucia/decisions/lucia-decision-log)