settled-reach/CLAUDE.md

The Settled Reach

A top-down life-sim — asymmetric information, occlusion-based perception, single-character perspective, Rimworld-style storyteller. Systems interactions like The Sims, combat and visuals like single-character Rimworld, world generation inheriting patterns from Dwarf Fortress and NMS, economy inspired by X4/EVE. Many systems interactable and ready for player participation, but capable of being ignored — the world is alive for any given run. Set in an original science fiction universe. Godot 4 client + Rust/bevy_ecs simulation server via subprocess/IPC.

Official Title: The Settled Reach Repository name: settled-reach Version source of truth: project.yaml (root version field, scheme: 0.{phase}.{n})

Project Structure

client/               # Godot 4 client
server/               # Rust/bevy_ecs simulation server
tooling/              # Build tools, scripts, asset pipelines
tests/                # Integration and end-to-end tests
docs/                 # Architecture, design, briefings, workshops
db/                   # Schema + seed data (connectors moved to tooling/db/)
.claude/              # Agents, skills, rules
decisions/            # Decision domain files (D-NNN confirmed, Q-NNN open, R-NNN rejected)

Full annotated tree: .claude/rules/project-structure.md

DevOps

See docs/DEVOPS.md for build, test, lint, and CI procedures. All development operations go through the top-level Makefile — run make for a summary of targets.

Asset pipeline

server/data/systems.db is a read-only canonical snapshot produced by the generator pipeline — never edit it directly. To regenerate: make regen-db. Full rules in .claude/rules/asset-pipeline.md.

Development Cascade — First Things First

Development follows a strict cascade. Each phase has a concrete deliverable. Do NOT discuss, design, or implement detail from a later phase while an earlier phase is incomplete. If you encounter references to later-phase detail (room grammar, NPC bundles, heritage tokens, etc.) in documents or decisions, either ignore them silently and stay at the correct level, or flag that the reference is dragging attention to the wrong scope level and suggest it be rephrased or moved.

Phase	Focus	Deliverable
1	Wiki content complete — all planets, moons, stations, heightmaps, artwork	Implant-ready Godot map of the Reach with click-throughs + wiki/GTTR popups
2	Economics layer — supply/demand, transport, political/social pressure, corporations, supply chains	Economics spreadsheets/graphs with runtime-tweakable simulation
3	Planetary/moon maps & station layouts — cities, rivers, mountains, roads, biomes, rail	Atlas of the Reach (implant app)
4	World generation (tile/chunk/block) — deterministic multilayer seed→tile cascade; each layer viewed as a map in the implant Atlas (no in-world rendering)	Deterministic walkable-world data + per-layer Atlas maps + asset catalog
5	Player control & in-world rendering — character, walls/stairs/doors, lighting, drawn on generated tiles (no test map)	Player viewport with final-version assets on the generated world
6	Detail coloring — room-level NPC population, cultural room grammar	Only when the world is walkable

v0.2 target is dropped. No scoping negotiations. Build the base systems fully.

Generation before player (D-166, amended 2026-05-22). No player-control or in-world rendering work begins until the generator can deterministically seed-generate every tile of every world via the full multilayer cascade. There is no hand-made test map — test layers are produced by the generator itself once layer-drawing begins. Progress is viewed through the implant Atlas (per-layer maps), which already exists (Phase 3). The current in-world rendering code is left as-is until Phase 5 — do not build on it or rip it out before then.

Work Modes

Kanban mode (default)

Work flows continuously through milestones. /whats-next selects the next epic-sized batch from the dependency graph, refines ticket context via parallel Si agents, then activates a worktree. /pr-process (from worktree) and /pr-review (from main) handle the review cycle through Gitea PR comments. Milestones are many-to-many with tickets, can run in parallel, and can block other milestones.

Pair session

Human and Claude work together interactively on a single task. No background agents, no autonomous work. Used for load-bearing architecture changes where the human needs to make judgment calls as the work progresses — not approve a finished result.

Rules:

• No Agent spawns, no run_in_background. One thread of work.
• Propose one change at a time. Wait for human reaction before continuing.
• Explain what you're about to do and why before doing it.
• After each change, verify together (compile, test, inspect) before moving to the next.
• The human is a participant, not a reviewer. Ask questions, surface tradeoffs, flag risks in real-time.

When to use: Ticket description says "pair session", or the work touches foundational systems where a wrong call is expensive to undo (tick cycle architecture, protocol design, data model migrations, build pipeline rewrites).

Agent Instructions

Agent scope

• All file paths are relative to the repo root (e.g. server/src/bridge/types.rs).
• Topic branches per logical work unit (e.g. heightmap-import, city-names-table). Any agent can touch any file — personalities guide perspective, not file access.
• Never chain git commands in a single Bash call (e.g. git add ... && git commit ...). Always run git add and git commit as separate sequential Bash calls.
• Stale git lock files: If a git command fails with index.lock: File exists, you may remove the lock file at .git/index.lock (or .git/worktrees/<name>/index.lock if in a worktree).

Database

The ticketing database (settledreach.db) is accessed via SR_DB_PATH env var (set in .claude/settings.json). A backup is committed to docs/backups/settledreach.db.backup via main only.

Before starting work

1. Check active work: tooling/db/ticket list --status in_progress
2. Check your ticket: tooling/db/ticket show <id>
3. Check dependencies: tooling/db/ticket deps <id>
4. Read relevant decisions/*.md domain file(s) referenced in the ticket
5. Background context: docs/briefings/{your-name}.md, docs/discussions/

CLI tools

Prefer CLI wrappers over raw SQL. Never use the sqlite3 CLI — it crashes in Claude Code (std::bad_alloc). Use the wrapper scripts instead.

Tool	Command	Full reference
Tickets	tooling/db/ticket list, show, create, assign	/ticket skill
Milestones	tooling/db/ticket milestone list, create, link, show	/ticket skill
SQL queries	tooling/db/sqlite-query "SELECT ..."	—
SQL writes	tooling/db/sqlite-exec "UPDATE ..."	—
Decisions	tooling/db/decision show, next, claim, check-dupes	—

Testing preferences

• Prefer live Gauntlet testing over mocks. For visual tests and rendering verification, use the full client/server pipeline (--test-mode + SR_LIVE=1) instead of TestHarness mocks. The Gauntlet test world produces production-identical data. Mocks can mask rendering bugs by taking different code paths.
• Gauntlet rooms are immutable. Never modify existing rooms — new systems get new rooms. This ensures StableId determinism and fixture stability.
• Three test tiers: (1) Live server — highest fidelity, (2) MessagePack replay via Protocol.decode_snapshot() — for unreachable rooms, (3) TestHarness mock — for UI-only tests where fog data doesn't matter.
• make fixtures-gauntlet regenerates real server snapshot fixtures from the Gauntlet world.

Implant UI component library (D-169, D-170)

The implant UI system — all diegetic neural overlay panels — lives at client/ui/implant/. Components are Godot Control scenes styled via a shared Theme resource (default_implant.tres). Do not hand-roll implant panel layouts; compose from the library.

Components: ImplantPanel (root container), ImplantHeader (title + subtitle), ImplantSeparator (horizontal rule), ImplantDataRow (key/value row, optional color), ImplantTextBlock (RichTextLabel for wrapping text).

Theme resource: client/ui/implant/default_implant.tres — defines semantic color roles (PRIMARY_TEXT, DIM_TEXT, ACCENT_ACTIVE, ACCENT_POSITIVE, ACCENT_NEGATIVE, ACCENT_WARNING, SEPARATOR), spacing, and font sizes. Swap the entire .tres to change implant hardware appearance at runtime.

HUD visibility (D-170): client/scripts/autoloads/hud_groups.gd manages z-index layering. Modes: GAMEPLAY (z=0), INSERT (z=10), FULLSCREEN (z=20), MODAL (z=30). App paths are hierarchical: implant/map, implant/wiki/gttr, etc. Opening any implant/* app occludes gameplay; closing returns to gameplay. Key API: open_app(), close_app(), toggle_app(), is_app_active(). Emits gameplay_occluded signal so renderers can pause.

GameplayRenderer base class: client/scripts/rendering/gameplay_renderer.gd — extends Node2D. Subclasses override _gameplay_process() and _gameplay_draw(). Connected to HudGroups.gameplay_occluded to pause when the implant is fullscreen. Used by CursorRenderer, EntityRenderer, FogEntities, SoundIndicatorRenderer, WorldRenderer.

GDScript conventions

Autoload parse-order rule: Autoload scripts (client/scripts/autoloads/) compile before global class_name scripts are registered. Referencing a class_name type directly in an autoload causes a parse-time "not declared" error. Pattern:

• Declare fields untyped: var my_field = null (comment the intended type)
• Do not reference class_name types at the top level or in _ready() of autoloads
• In method bodies called at runtime (e.g. apply_snapshot), use load() inline — by then the script is cached and load() returns the cached resource without reloading: var CVD := load("res://scripts/rendering/character_visual_descriptor.gd")
• Do not cache the load() result in _ready() — _ready() fires during autoload init, before the target script is in the resource cache, causing an actual file reload that breaks self-references in scripts using their own class_name

game_state.gd (character_visual_descriptor field) and sim_bridge.gd (harness field) follow this pattern.

File conventions

• Decisions: domain files in decisions/ (see decisions/README.md for index)
• Decision IDs: D-NNN (confirmed), Q-NNN (open questions), R-NNN (rejected)
• Claim IDs before writing: tooling/db/decision claim D <domain> "title" — prevents ID collisions across parallel branches
• Diagrams: .d2 source + .png renders in docs/diagrams/{category}/. Create or update diagrams via /d2-diagram when D-records are added or modified.
• Discussion rounds: numbered sequentially, archived to docs/discussions/ when complete
• Briefings: one per agent, updated after decision-producing rounds
• Tickets: managed via tooling/db/ticket CLI or /ticket skill