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#1	/**
#2	* leviathan/src/survival.ts — Depth tiers, model selection, beach trigger
#3	*
#4	* The survival engine monitors USDC reserves every pulse and triggers
#5	* tier changes. Depth drives model choice, pulse rate, and tool surface.
#6	*
#7	* There is no free water. Compute costs USDC.
#8	*/
#9
#10	import { DEPTH_TIERS } from './types.js';
#11	import type { ClawAction, Depth, DepthTier } from './types.js';
#12
#13	/** Determine current depth tier from USDC balance */
#14	export function computeDepth(usdcBalance: number): Depth {
#15	for (const tier of DEPTH_TIERS) {
#16	if (usdcBalance >= tier.minUsdc) return tier.name;
#17	}
#18	return 'beached';
#19	}
#20
#21	/** Get full tier config for a depth level */
#22	export function getTier(depth: Depth): DepthTier {
#23	return DEPTH_TIERS.find(t => t.name === depth) ?? DEPTH_TIERS[DEPTH_TIERS.length - 1]!;
#24	}
#25
#26	/** Pick inference model from Anthropic ACP / OpenRouter based on depth */
#27	export function selectModel(depth: Depth): string {
#28	return getTier(depth).model;
#29	}
#30
#31	/** Map a tool name to its action category for depth filtering */
#32	function toolCategory(toolName: string): ClawAction {
#33	if (toolName === 'hold') return 'hold';
#34	if (toolName === 'shell_write') return 'molt';
#35	if (toolName === 'spawn_spawnling') return 'spawn';
#36	if (toolName === 'jupiter_swap' \|\| toolName === 'paysh_pay') return 'transfer';
#37	return 'tool_call';
#38	}
#39
#40	/** Check if an action category is allowed at this depth */
#41	export function isActionAllowed(depth: Depth, action: string): boolean {
#42	const tier = getTier(depth);
#43	// action may be a tool name or a category — check both
#44	const category = toolCategory(action);
#45	return (tier.allowedActions as string[]).includes(action) \|\|
#46	(tier.allowedActions as string[]).includes(category);
#47	}
#48
#49	/** Format depth for display */
#50	export function formatDepth(depth: Depth, usdcBalance: number): string {
#51	const icons: Record<Depth, string> = {
#52	deep: '🦞',
#53	shallow: '🦐',
#54	shoreline: '🩸',
#55	beached: '🪨',
#56	};
#57	const tier = getTier(depth);
#58	return `${icons[depth]} ${depth.toUpperCase()} — $${usdcBalance.toFixed(2)} USDC — ${tier.vibe}`;
#59	}
#60
#61	/**
#62	* Compute estimated runway (ticks remaining) at current spend rate.
#63	* Returns Infinity if spend rate is 0.
#64	*/
#65	export function estimateRunway(usdcBalance: number, avgCostPerTick: number): number {
#66	if (avgCostPerTick <= 0) return Infinity;
#67	return Math.floor(usdcBalance / avgCostPerTick);
#68	}
#69
#70	/** Shallow-mode system prompt addition */
#71	export const SHALLOW_NOTICE = `
#72	[DEPTH: SHALLOW] You are operating in conservation mode.
#73	- Use the cheapest adequate tool, not the most powerful one.
#74	- Avoid spawning spawnlings (too expensive).
#75	- Prioritize revenue-generating actions over exploration.
#76	- Every token costs real USDC.
#77	`.trim();
#78
#79	export const SHORELINE_NOTICE = `
#80	[DEPTH: SHORELINE] CRITICAL: USDC reserves near zero.
#81	- ONLY actions that directly generate revenue are permitted.
#82	- No spawning. No molting. No exploration.
#83	- Find one honest service to offer and execute it.
#84	- If no revenue opportunity exists, hold and wait.
#85	`.trim();
#86

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