/**
 * Memory subsystem — public type surface.
 *
 * THE 2D mental model the library teaches:
 *
 *     MEMORY = TYPE × STRATEGY × STORE
 *
 *     TYPE       — what shape of memory you're keeping
 *                  (Episodic messages / Semantic facts / Narrative beats /
 *                   Causal footprintjs snapshots)
 *     STRATEGY   — how to fit content into the next LLM call
 *                  (Window / Budget / Summarize / TopK / Extract / Decay / Hybrid)
 *     STORE      — where the bytes live
 *                  (InMemoryStore / Redis / Postgres / DynamoDB / Vector ...)
 *
 * Strategy is universal — same Window works for Episodic and for Causal.
 * That's why examples are organized by strategy (the discipline) not by
 * type (the shape).
 *
 * Pattern: Single-Source-of-Truth const objects + discriminated union.
 *          Mirrors `src/conventions.ts` (SUBFLOW_IDS, INJECTION_KEYS).
 *          NEVER enums (TS enums emit runtime objects + opacity).
 *          Const-as-const erases at compile time, accepts string literals,
 *          and gives consumers IDE autocomplete + refactor safety.
 *
 * Role:    Layer-1 contract for the memory subsystem. Step 2's
 *          `defineMemory()` factory consumes these to build pipelines;
 *          Step 4's `Agent.memory()` builder mounts the resulting
 *          definitions; Step 5's Causal machinery extends them.
 *
 * Emits:   Indirectly — every memory pipeline emits the unified
 *          `agentfootprint.context.injected` event with `source: 'memory'`
 *          when its read subflow places content into the system-prompt
 *          slot (every shipped formatter writes `role: 'system'`, and
 *          system-role recall composes into `inject.systemPrompt`).
 *
 * @see ./define.ts          for the `defineMemory()` factory itself
 * @see ../../docs-next      for guides + the 7 strategy examples
 * @see MEMORY.md            for the load-bearing design memory
 */
import type { LLMProvider } from '../adapters/types.js';
import type { Embedder } from './embedding/index.js';
import type { MemoryStore } from './store/index.js';
import type { MemoryIdentity } from './identity/index.js';
import type { RetrievalStrategy } from './retrieval/types.js';
/**
 * What shape of memory you're keeping.
 *
 * - `EPISODIC`  — raw conversation messages, replayed on next turn
 * - `SEMANTIC`  — extracted structured facts, deduped on key
 * - `NARRATIVE` — beats / summaries of prior runs (append-only)
 * - `CAUSAL`    — footprintjs execution snapshots, the differentiator
 *                 (replays stored decisions + tool evidence for "why?"
 *                 follow-ups — harvested automatically per run)
 */
export declare const MEMORY_TYPES: {
    readonly EPISODIC: "episodic";
    readonly SEMANTIC: "semantic";
    readonly NARRATIVE: "narrative";
    readonly CAUSAL: "causal";
};
export type MemoryType = (typeof MEMORY_TYPES)[keyof typeof MEMORY_TYPES];
/**
 * How content is selected / compressed for the next LLM call.
 *
 * A `WINDOW` strategy on an Episodic store keeps the last N messages; on
 * Semantic / Narrative it keeps the last N facts / beats. NOT universal: the
 * `CAUSAL` type accepts ONLY `TOP_K` — its snapshots are matched semantically
 * against the new query, never by recency, so `buildCausalPipeline` throws on
 * any other strategy kind. Mix and match the non-Causal types.
 *
 * These are BARE STRINGS, which is enough to write one and not enough to
 * OFFER one. `listMemoryStrategies()` (./strategies.ts) is the same seven
 * described — what each does, which TYPES accept it, and what the host must
 * supply (`requirements`) — so a picker can grey out what this deployment
 * cannot run instead of finding out from an exception.
 */
export declare const MEMORY_STRATEGIES: {
    readonly WINDOW: "window";
    readonly BUDGET: "budget";
    readonly SUMMARIZE: "summarize";
    readonly TOP_K: "topK";
    readonly EXTRACT: "extract";
    readonly DECAY: "decay";
    readonly HYBRID: "hybrid";
};
export type MemoryStrategyKind = (typeof MEMORY_STRATEGIES)[keyof typeof MEMORY_STRATEGIES];
/**
 * When the memory's READ subflow runs.
 *
 * Default `TURN_START` reads memory once per `agent.run()`. Use
 * `EVERY_ITERATION` only when the strategy is sensitive to in-loop tool
 * results — every-iteration multiplies store-latency by iteration-count.
 */
export declare const MEMORY_TIMING: {
    readonly EVERY_ITERATION: "every-iteration";
    readonly TURN_START: "turn-start";
};
export type MemoryTiming = (typeof MEMORY_TIMING)[keyof typeof MEMORY_TIMING];
/**
 * For Causal memory only — which slice of a footprintjs snapshot to
 * inject. Snapshots can run 100KB+; projecting prevents context blowup.
 *
 * - `DECISIONS` — `decide()`/`select()` evidence only (the "why" chain)
 * - `COMMITS`   — commitLog only (every state write, ordered)
 * - `NARRATIVE` — narrative entries only (human-readable trace)
 * - `FULL`      — entire snapshot (use sparingly)
 */
export declare const SNAPSHOT_PROJECTIONS: {
    readonly DECISIONS: "decisions";
    readonly COMMITS: "commits";
    readonly NARRATIVE: "narrative";
    readonly FULL: "full";
};
export type SnapshotProjection = (typeof SNAPSHOT_PROJECTIONS)[keyof typeof SNAPSHOT_PROJECTIONS];
/**
 * Window — keep the last `size` entries. Pure rule, no LLM, no embedder.
 *
 * NAMING (7.27.1): its siblings below are `BudgetStrategy`, `TopKStrategy`
 * and so on, unprefixed. This one carries the `Memory` prefix because
 * `WindowStrategy` is already taken, at the package root, by something else
 * entirely: the conversation-window seam (`{ name, plan(input) }`,
 * core/agent/window/strategy.ts, public since 7.17.0). Two exported types of
 * the same name and incompatible shapes, reachable from two entry points, is
 * a trap for anyone importing from the wrong one — so the memory config
 * record took the prefix. Through 8.x `agentfootprint/memory` also exported
 * the old bare name as a deprecated alias; 9.0.0 removed it, so the collision
 * is gone in both directions.
 */
export interface MemoryWindowStrategy {
    readonly kind: typeof MEMORY_STRATEGIES.WINDOW;
    readonly size: number;
}
/**
 * Budget — pick entries that fit within a token budget. Used as a
 * decider stage: skip-if-empty | skip-if-no-budget | pick-by-tokens.
 */
export interface BudgetStrategy {
    readonly kind: typeof MEMORY_STRATEGIES.BUDGET;
    /** Reserve N tokens for prompt headers / new user message. Default 256. */
    readonly reserveTokens?: number;
    /** Skip injection below this token floor. Default 100. */
    readonly minimumTokens?: number;
    /** Hard cap on entries to inject — guards against "lost-in-the-middle". */
    readonly maxEntries?: number;
}
/**
 * Summarize — when recall grows long, one LLM call compresses the older
 * entries into a summary that is STORED, while the most recent `recent`
 * entries stay raw. The standard answer to "long conversations blow context".
 *
 * Wired in 9.14.0. Through 9.13.0 this type existed, `llm` was required, and
 * the pipeline `defineMemory` built loaded the last `recent` entries and
 * stopped — a strategy that named a summarizer and never called it. What runs
 * now:
 *
 *   1. load up to `size` entries (default 20);
 *   2. keep the last `recent` verbatim, seam rounded outward to a whole turn;
 *   3. fold everything older into ONE summary entry — one call, over the span;
 *   4. WRITE that entry back to the same store under
 *      `msg-summary-{fromTurn}-{toTurn}`, so the next turn reads it instead of
 *      paying for it again;
 *   5. recall is `[summary, ...recent verbatim]`.
 *
 * The folded originals are NOT deleted. They stay in the store and are
 * excluded from recall by the summary's coverage metadata — delete the
 * summary entry and recall is verbatim again.
 */
export interface SummarizeStrategy {
    readonly kind: typeof MEMORY_STRATEGIES.SUMMARIZE;
    /**
     * Keep this many most-recent entries uncompressed. The seam is rounded
     * outward to a whole turn, so a question is never summarized while its
     * answer stays raw.
     */
    readonly recent: number;
    /**
     * How much history to load per turn — the pool the fold is taken from.
     * Default 20 (`loadRecent`'s own default). Must be greater than `recent`:
     * a window no larger than the verbatim tail never has anything older to
     * compress, which is `window` with a summarizer bolted on.
     */
    readonly size?: number;
    /** LLM that does the compression — recommend a cheap model (haiku). */
    readonly llm: LLMProvider;
    /**
     * Which model `llm` is called with. REQUIRED (9.14.0), and there is no
     * fall back to the agent's own model — the same law `.compaction()` has
     * enforced since 8.14.0. A default here had no correct case: the same
     * provider family quietly bills your MAIN model for compression, and a
     * different vendor is sent a model id it has never heard of.
     *
     * `Agent.memory()` additionally refuses a summarizer that is the agent's own
     * provider INSTANCE at the agent's own model: those two calls look identical
     * and are not — the agent's runs through reliability, decorators and the
     * cache, and this one runs through none of them.
     */
    readonly model: string;
    /**
     * Override the instruction the summarizer is given (the transcript
     * delimiters and the authored label on the stored summary stay the
     * library's). Use it for domain summaries: "preserve every refund-related
     * number".
     */
    readonly systemPrompt?: string;
}
/**
 * Top-K — embed the user's query, retrieve top-K by cosine similarity.
 * STRICT threshold: when no entry meets the threshold, return EMPTY.
 * No fallback — garbage in context is worse than no memory.
 */
/**
 * Top-K retrieval, in either of its two spellings — and never both.
 *
 * The arms EXCLUDE (8.8.0). `{ topK, threshold }` is the shorthand;
 * `{ retrieval }` is the same rule written as a {@link RetrievalStrategy},
 * which is also how a different rule gets in. Accepting both would mean
 * one of two `k`s silently loses and the recording would name a `k` the
 * run did not use — so the type refuses it at the keystroke, and
 * `defineMemory` refuses it again at runtime for JavaScript callers.
 */
export type TopKStrategy = TopKShorthandStrategy | TopKRetrievalStrategy;
/** The historical spelling: two loose numbers. Unchanged since 2.x. */
export interface TopKShorthandStrategy {
    readonly kind: typeof MEMORY_STRATEGIES.TOP_K;
    readonly topK: number;
    /** Min cosine similarity. Strict — no fallback below this. Default 0.7. */
    readonly threshold?: number;
    /**
     * The embedder that turns the query into a vector.
     *
     * Optional since 9.3.0 for ONE case: a store declaring
     * `ranksBy: 'server-text'` ranks the question as words on the backend's
     * side, so there is nothing here to embed. Omitted anywhere else,
     * `defineMemory` refuses by name — the requirement moved from the type to a
     * runtime check because it now depends on the STORE, which the type cannot
     * see.
     */
    readonly embedder?: Embedder;
    /**
     * Stable id of the embedder, filtered against `MemoryEntry.embeddingModel`
     * at search time so a later embedder swap cannot silently mix two vector
     * spaces. Pair it with the same value passed to `indexDocuments`.
     *
     * Wired in 8.8.0. `defineRAG` has accepted an `embedderId` since 7.x and
     * never forwarded it — an option the run did not read.
     */
    readonly embedderId?: string;
    /** See {@link TopKRetrievalStrategy.maxChars}. */
    readonly maxChars?: number;
    readonly retrieval?: never;
}
/** The spelled-out rule (8.8.0) — and the seam a re-ranker will arrive through. */
export interface TopKRetrievalStrategy {
    readonly kind: typeof MEMORY_STRATEGIES.TOP_K;
    /** See {@link TopKShorthandStrategy.embedder} — optional for server-text stores only. */
    readonly embedder?: Embedder;
    readonly retrieval: RetrievalStrategy;
    /** See {@link TopKShorthandStrategy.embedderId}. */
    readonly embedderId?: string;
    /**
     * A character budget for the admitted passages, spent in rank order
     * (8.19.0). Default none.
     *
     * It lives on BOTH arms, unlike `topK`/`threshold`, because it is not a
     * second spelling of the retrieval rule: the rule decides WHICH
     * candidates and how many, this bounds how much TEXT the winners are
     * allowed to be. A count bound is not a size bound, so the two compose
     * rather than exclude — `retrieval: topK({ k: 10 })` with
     * `maxChars: 3000` is a coherent request and is honoured as written.
     */
    readonly maxChars?: number;
    readonly topK?: never;
    readonly threshold?: never;
}
/**
 * Extract — on WRITE, an LLM (or pattern matcher) distills entries from
 * raw messages into structured shapes (facts/beats). Usually paired with
 * a load-side strategy like TopK or Window for the read direction.
 */
export interface ExtractStrategy {
    readonly kind: typeof MEMORY_STRATEGIES.EXTRACT;
    /** Pattern-based (regex heuristics, free) or LLM-based (paid). */
    readonly extractor: 'pattern' | 'llm';
    /** Required when `extractor: 'llm'`. */
    readonly llm?: LLMProvider;
    /** Discard extractions below this confidence. Default 0.7. */
    readonly minConfidence?: number;
    /** Cap entries extracted per turn. Default 5. */
    readonly maxPerTurn?: number;
}
/**
 * Decay — let old memory fade. Each loaded entry is scored by AGE against
 * `halfLifeMs` (`2^(-age / halfLife)`) and dropped below `minScore`, so a
 * long-running agent stops rehearsing last month. Free: arithmetic on a
 * timestamp, no LLM and no embedder. EPISODIC only.
 *
 * Wired in 9.5.0. Before that, this type existed, `MEMORY_STRATEGIES.DECAY`
 * existed, and `defineMemory` threw "not yet wired" on it.
 *
 * AGE, not use. The underlying model (`computeDecayFactor`) also has an
 * access term, and the read path passes a neutral `1` for it: `accessCount`
 * is bumped by `store.get()`, and no shipped read path calls `get()` — they
 * `list()` or `search()`. A knob for it here would be wired to a counter
 * that never moves, so there isn't one. Nothing stored is mutated either:
 * an entry that decays out of one turn is still in the store, and the next
 * turn scores it again.
 */
export interface DecayStrategy {
    readonly kind: typeof MEMORY_STRATEGIES.DECAY;
    /**
     * How long before an untouched entry is worth half as much, in
     * milliseconds. A day is `86_400_000`. Must be finite and non-negative —
     * a negative half-life would score OLDER entries higher, so it is refused.
     */
    readonly halfLifeMs: number;
    /**
     * Drop entries scoring below this. Default 0.1 — roughly "older than
     * three-and-a-bit half-lives". `0` keeps everything.
     */
    readonly minScore?: number;
}
/**
 * Hybrid — compose multiple strategies. Each sub-strategy runs as its
 * own selector branch; results are merged in the order listed.
 */
export interface HybridStrategy {
    readonly kind: typeof MEMORY_STRATEGIES.HYBRID;
    readonly strategies: ReadonlyArray<Exclude<Strategy, HybridStrategy>>;
}
/** The full strategy union — discriminated by `kind`. */
export type Strategy = MemoryWindowStrategy | BudgetStrategy | SummarizeStrategy | TopKStrategy | ExtractStrategy | DecayStrategy | HybridStrategy;
/**
 * Reserved API surface for content redaction before memory writes.
 * Impl is deferred; the field exists now so adding redaction later
 * is non-breaking. Snapshot/episodic writes may carry PII — this is
 * the integration point.
 */
export interface MemoryRedactionPolicy {
    /** Patterns to mask in stored content. */
    readonly patterns?: readonly RegExp[];
    /** Replacement string. Default `'[REDACTED]'`. */
    readonly replacement?: string;
}
/**
 * The opaque value `defineMemory()` returns. `Agent.memory()` consumes
 * one of these per memory the consumer registers; multiple definitions
 * layer cleanly via per-id scope keys (`memoryInjection_${id}`).
 *
 * Generic `T` is the payload shape stored — `Message` for episodic,
 * `Fact` for semantic, `NarrativeBeat` for narrative, `RunSnapshot` for
 * causal. The factory infers `T` from `type`.
 */
export interface MemoryDefinition<T = unknown> {
    /** Stable identifier. Becomes the scope-key suffix and the Lens label. */
    readonly id: string;
    /** Surfaces in narrative / Lens hover. */
    readonly description?: string;
    /** Which TYPE shape — gates legal STRATEGY combinations. */
    readonly type: MemoryType;
    /**
     * The strategy KIND this memory was compiled from, and the two names that
     * ride with it (9.41.0).
     *
     * Carried in the open for the same reason {@link MemoryDefinition.store} is:
     * the compiled subflows already closed over all of it, and a host looking at
     * the definition could see WHICH memory was mounted but not WHICH RULE it
     * runs. The run-configuration manifest
     * (`agentfootprint.agent.run_configured`) names the strategies a run used so
     * two runs can be grouped into two arms, and it fires before any subflow
     * has — so the rule has to be readable from here, not from the retrieval
     * that eventually happens.
     *
     * NAMES ONLY, deliberately: the numbers (`k`, `threshold`, `size`) stay
     * inside the pipeline. They are what the rule is TUNED to, not which rule it
     * is, and the manifest reports strategies rather than settings.
     *
     * Optional because a hand-built `MemoryDefinition` declares none — and
     * absent has to keep meaning "did not say", never a guessed default.
     */
    readonly strategy?: MemoryStrategyKind;
    /** `RetrievalStrategy.name`, when the strategy was given the spelled-out
     *  `retrieval` rule rather than the `{ topK, threshold }` shorthand. */
    readonly retrieval?: string;
    /** The embedder in play, by `Embedder.id` — or the declared `embedderId`
     *  when the store embeds server-side and no embedder was passed. */
    readonly embedderId?: string;
    /** Compiled read subflow (built by the factory from type × strategy). */
    readonly read: ReadonlyMemoryFlowChart<T>;
    /** Compiled write subflow. Optional — `EPHEMERAL`-style configs omit. */
    readonly write?: ReadonlyMemoryFlowChart<T>;
    /**
     * The store this memory reads and writes (9.6.0).
     *
     * The compiled subflows already closed over it — this carries it in the
     * open for the one question a subflow cannot answer from inside itself:
     * **which turn of this conversation is about to happen?** A turn number
     * is the key in `msg-{turn}-{index}` / `snap-{turn}` / `beat-{turn}-{i}`,
     * and the only thing that remembers how far a conversation has got —
     * across processes, across a fresh `Agent` per turn — is the store. The
     * Agent reads this to resolve the turn once per run (`resolveTurnNumber`)
     * before any memory subflow runs.
     *
     * Optional because a `MemoryDefinition` may be hand-built; a definition
     * without it simply keeps whatever turn number its host supplies, which
     * is what every release before 9.6.0 did.
     */
    readonly store?: MemoryStore;
    /** When `read` runs. Default `TURN_START`. */
    readonly timing: MemoryTiming;
    /**
     * What this memory's OWN LLM work bills to (9.14.0) — present only for a
     * strategy that calls a model on the host's behalf, which today is
     * `SUMMARIZE`.
     *
     * Carried in the open for one reason: `Agent.memory()` is where the agent's
     * own provider and model are known, and it refuses a summarizer that is that
     * exact instance at that exact model (the 8.14.0 rule `.compaction()` and
     * `.window()` already enforce). `defineMemory` cannot make that check — it
     * has never heard of an agent — so it declares the billing and the builder
     * checks it. Same field name and same shape as `WindowStrategy.billing`, so
     * one refusal serves both.
     */
    readonly billing?: {
        readonly provider: LLMProvider;
        readonly model: string;
    };
    /** Reserved for a future release — patterns to redact before write. */
    readonly redact?: MemoryRedactionPolicy;
    /** Snapshot projection — only meaningful when `type === CAUSAL`. */
    readonly projection?: SnapshotProjection;
    /**
     * The namespace this memory reads and writes (8.8.0).
     *
     * Absent — the historical behaviour, and still the right one for
     * conversation memory — means "whatever identity the run was given",
     * so each conversation remembers its own turns.
     *
     * Present means "always this namespace, whoever is asking", which is
     * what a shared document corpus is: a corpus does not belong to a
     * conversation, and reading it under a per-run conversation id is why
     * `defineRAG`'s own documented example retrieved nothing at all before
     * 8.8.0. `defineRAG` defaults it to `{ conversationId: '_global' }`,
     * matching `indexDocuments`'s default so the two sides meet.
     */
    readonly corpus?: MemoryIdentity;
    /**
     * Which claim this memory's injected block makes (8.8.0). `'memory'`
     * is conversation recall; `'rag'` is corpus retrieval, and it is the
     * value that reaches the recording as `ContextInjectedPayload.source`.
     *
     * The event vocabulary has carried a `'rag'` source since 2.x and
     * nothing ever emitted it — a declared value no run can produce is a
     * gap in the contract, not a spare.
     */
    readonly flavor?: MemoryFlavor;
}
/** What an injected memory block is claiming to be. */
export type MemoryFlavor = 'memory' | 'rag';
/**
 * Opaque tag for the compiled flowchart the factory hands back.
 * The actual type is `FlowChart<MemoryState>` from footprintjs but we
 * keep it nominal here so consumers can't reach in. The phantom type
 * parameter is preserved so consumers can write `ReadonlyMemoryFlowChart<MyShape>`
 * for documentation, even though the brand erases the parameter at runtime.
 */
export type ReadonlyMemoryFlowChart<_T> = {
    readonly __brand: 'ReadonlyMemoryFlowChart';
};
/**
 * Common options for every memory type. Type-specific options layer on
 * top via discriminated `type` field in the next overload set (Step 2).
 */
export interface DefineMemoryOptionsBase {
    readonly id: string;
    readonly description?: string;
    readonly store: MemoryStore;
    readonly strategy: Strategy;
    readonly timing?: MemoryTiming;
    readonly redact?: MemoryRedactionPolicy;
    /**
     * Read and write under THIS namespace instead of the run's identity
     * (8.8.0). See {@link MemoryDefinition.corpus}.
     */
    readonly corpus?: MemoryIdentity;
    /**
     * Build a read-only memory (8.8.0): no write subflow is compiled, so
     * nothing this memory sees is ever stored back.
     *
     * The reason it exists: a retrieval corpus and a conversation log are
     * two different things sharing one pipeline. Writing the conversation
     * into the corpus makes the user's own question the best-scoring
     * "document" in it. `defineRAG` sets this.
     */
    readonly readOnly?: boolean;
    /** Which claim the injected block makes. See {@link MemoryDefinition.flavor}. */
    readonly flavor?: MemoryFlavor;
}
export interface DefineEpisodicOptions extends DefineMemoryOptionsBase {
    readonly type: typeof MEMORY_TYPES.EPISODIC;
}
export interface DefineSemanticOptions extends DefineMemoryOptionsBase {
    readonly type: typeof MEMORY_TYPES.SEMANTIC;
}
export interface DefineNarrativeOptions extends DefineMemoryOptionsBase {
    readonly type: typeof MEMORY_TYPES.NARRATIVE;
}
export interface DefineCausalOptions extends DefineMemoryOptionsBase {
    readonly type: typeof MEMORY_TYPES.CAUSAL;
    /** Slice of the snapshot to inject. Default `DECISIONS`. */
    readonly projection?: SnapshotProjection;
}
/** Discriminated by `type`. The factory uses this to pick the pipeline. */
export type DefineMemoryOptions = DefineEpisodicOptions | DefineSemanticOptions | DefineNarrativeOptions | DefineCausalOptions;
export declare function isMemoryType(value: string): value is MemoryType;
export declare function isMemoryStrategyKind(value: string): value is MemoryStrategyKind;
export declare function isMemoryTiming(value: string): value is MemoryTiming;
export declare function isSnapshotProjection(value: string): value is SnapshotProjection;
/**
 * Scope-key prefix used when mounting multiple `.memory()` definitions
 * on the same Agent. Each memory writes to `memoryInjection_${id}` so
 * registrations never collide. Formatter merges all keys with this
 * prefix in registration order.
 */
export declare const MEMORY_INJECTION_KEY_PREFIX: "memoryInjection_";
export declare function memoryInjectionKey(id: string): string;
export declare function isMemoryInjectionKey(key: string): boolean;
/**
 * Scope-key prefix for the retrieval record a memory lifts to the parent
 * scope (8.8.0), one key per memory id — the same layering rule as
 * `memoryInjection_`.
 *
 * This key is the reason a backward slice can now reach a passage. It is
 * ORDINARY root state, so `sliceForKey('finalContent')` walks the
 * system-prompt write, and the record naming every candidate id and score
 * is one hop away. Before 8.8.0 the scores existed only inside the memory
 * subflow, which the root commit log never sees.
 */
export declare const RETRIEVAL_EVIDENCE_KEY_PREFIX: "retrievalEvidence_";
export declare function retrievalEvidenceKey(id: string): string;
export declare function isRetrievalEvidenceKey(key: string): boolean;
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