feat: add local experiment archive

[christopherjnelson]

Scope

Adds a durable local SQLite experiment archive and compact query CLI for schema-v9 exports, plus FTS-searchable curated research notes. The active in-memory engine remains authoritative; this PR does not change gameplay, prompts, Patient Zero behavior, scheduling, map behavior, or World Lab UX.

Schema and service decisions

• Uses Node 24 built-in node:sqlite with versioned migrations, strict tables, foreign keys, useful indexes, WAL for file databases, prepared statements, and transactional batch import.
• Normalizes authoritative turns, attempts, actions, communications, diplomacy/alliance/world events, roster/configuration, topology, retention, and provenance.
• Stable identifiers and source hashes make reimports idempotent.
• Preserves source aggregate metrics for audit while deriving canonical query metrics from stored records.
• Defines canonical direction changes after communication as the sum of per-agent chronological calculations and reports source inconsistencies.
• Separates messages to Patient Zero, replies after directives, and observable compliance.
• Keeps query and note services application-independent for a future read-only adapter.

Local verification

• Imported both existing logs/ schema-v9 exports: 923 and 954 inserted records.
• Reimported the latest export: 0 inserted, 1 existing, 0 skipped, 0 rejected.
• Queried latest summary and Patient Zero analysis; compared both runs with per-turn, per-agent-turn, per-active-agent, and per-Patient-Zero-turn rates.
• Imported and FTS-searched an accepted Markdown implementation note.
• Reopened the database in fresh processes and repeated list/summary successfully.
• Confirmed SQLite, WAL, and shared-memory files are ignored and untracked.
• pnpm validate — passed.
• pnpm test:e2e — passed (1 Chromium test).

Risks and boundaries

• This is an append-only research archive, not crash recovery or restartable simulation state.
• Import currently accepts the schema-v9 export produced by main and rejects malformed or unsupported input transactionally.
• Compliance remains indeterminate when a free-text directive cannot map unambiguously to one structured action.
• Local archive and note contents remain untrusted data and are excluded from Git.

Intentionally deferred

MCP, embeddings, vector databases/search, a database browser, arbitrary SQL, active-runtime persistence, and restartable simulations are intentionally out of scope. A future read-only MCP adapter can reuse ExperimentQueryService and ResearchNoteService.