Create a Korean patch for a retro game

Purpose

Base decisions on evidence from the target game. Keep the evidence and adopted results from the initial survey, fonts and encoding, PoC, extraction, translation, reinsertion, product builds, distributable patches, and runtime verification traceable through completion.

Choose tools, languages, libraries, and fonts based on the target project's existing structure and the current environment. Regardless of those choices, preserve the required capabilities and verification criteria. Look up basic specifications from current primary sources when one straightforward search can recover them.

Treat source-language frequencies and structures from other titles as hypotheses until the target revision confirms them.

Foundational principle

Treat each playthrough as the whole product. Successful paths do not offset a known in-scope defect that can block progress, corrupt text or intended meaning, mislead the player about a choice, break approved terminology or voice, or impair interaction. Fix it, present evidence and feasible options for an explicit human decision to narrow the scope or claim, or withhold the release. See references/strategy/build-and-verify.md §6 and references/strategy/translation-workflow.md §6.

Operating principles

1. Credit progress only to the claim it strengthens. Effort, plausibility, implementation cost, and local success do not strengthen another claim. Keep the hardest unresolved completion condition—or the one most likely to force redesign—visible. Choose work and verification scope from that condition rather than the size or order of edits; work elsewhere only to supply a prerequisite, advance another declared in-scope claim, or apply a recorded human decision. Among approaches that preserve the same prerequisites and proof scope, prefer the lower total cost of obtaining the evidence. See references/conventions/project-records.md §1 and references/strategy/build-and-verify.md §1.
2. Reassess when evidence conflicts or work stops producing information. An observation that contradicts an adopted explanation or completion claim, repeated equivalent evidence, local checks that do not strengthen the cumulative claim, or unexplained exceptions and conflicting accounts of current project status are signals to stop. Reconstruct the affected baseline, completion condition, and live and rejected explanations before another attempt. Search references/tips/README.md by observation or affected transition when a close match could reduce investigation cost; after these signals, search before adding another local exception. Cases suggest hypotheses, not repairs; preserve valid evidence without forcing an analogy. See references/conventions/project-records.md §2 and references/strategy/debugging.md §2·§3·§6.
3. Keep product priorities and decision authority separate from implementation. Current implementation establishes behavior and change cost, not product value. The agent establishes technical facts and feasible options; humans choose product direction, quality, scope, acceptable loss, support, and investment. Routine implementation that preserves adopted intent remains the agent's responsibility. See references/conventions/project-records.md §1.1 and references/strategy/translation-workflow.md §4.1·§5.

Task-specific guidance

For an existing repository, reconstruct the current code, documents, artifacts, and verification state before choosing the guidance relevant to the next decision. Start with the initial survey when the game or its structure is not yet understood.

Decision area	Document	Use it to determine
Initial survey	references/strategy/initial-survey.md	Completion-critical conditions, actual dependencies, initial volume, unresolved populations, and revision-specific facts
Fonts and encoding	references/strategy/font-strategy.md	Code-to-glyph mapping, total repertoire, active working set, representation, and runtime reachability
Name entry and user strings	references/strategy/name-entry.md	Input repertoire, editing state, committed records, glyph supply, redisplay consumers, and persistence
Text extraction	references/strategy/text-extraction.md	Population and volume, consumer-defined boundaries and tokens, reversible artifacts, and round trips
PoC	references/strategy/poc.md	Whether a PoC is needed and what a visibility, representative end-to-end, or conditional PoC must establish
Reinsertion and hooks	references/strategy/reinsertion.md	Boundary policies, reference completeness, hooks, space, and consumer invariants
Translation	references/strategy/translation-workflow.md	Translation work and agent assignment, context, approved terminology and voice, protected information and consumer constraints, and high-impact semantic decisions
Build and verification	references/strategy/build-and-verify.md	Reproducible artifacts, checks enforced by the product build, distribution boundaries, integrity and runtime verification, text and interaction QA, and release readiness
Debugging and issue handling	references/strategy/debugging.md	Gameplay routes, target-state access, what state intervention can establish, causes, fixes, and regression evidence
Graphics text	references/strategy/graphics-text.md	Pixel-text population, protected visual assets, and consumer-path verification
Compression	references/strategy/compression.md	Verified transformation boundaries, consumer compatibility, and repacking verification
Runtime asset reachability	references/strategy/runtime-assets.md	Storage, lookup, load or transform, residency, and consumption as one connected claim

Apply the relevant conventions when designing or validating artifacts, exchange data, or records. Keep an existing repository structure when it already preserves the same responsibilities and constraints.

Scope	Document	Use it for
Project-wide implementation	references/conventions/project-conventions.md	Repository vocabulary and ownership; tooling build, analysis, product build, test, artifact verification, and runtime verification boundaries; machine-code verification; round-trip equivalence and denominator; final-write verification; external-component reproducibility; and source assets
Translation artifacts	references/conventions/translation-artifacts.md	Source preservation, control tokens, review states, and eligibility as product build inputs
Project records	references/conventions/project-records.md	Human strategic decisions, survey and PoC decisions, graphics-text catalog, HITL observations, QA evidence, and issue states
Analysis and product build data	references/conventions/data-formats.md	Character maps, controls, pointers, translation links, reinsertion policies, and font-rendering profiles

Read a platform document only when a constraint involving hardware, the medium, address space, or rendering can change the current decision.

Platform	Document
SNES	references/platforms/snes.md
Mega Drive	references/platforms/megadrive.md
Sega Saturn	references/platforms/saturn.md
PlayStation	references/platforms/ps1.md
Dreamcast	references/platforms/dreamcast.md
PC Engine and CD-ROM²	references/platforms/pce.md
PC-98	references/platforms/pc98.md
Game Gear	references/platforms/gg.md
Game Boy and Game Boy Color	references/platforms/gb.md
NES and Famicom	references/platforms/nes.md
Nintendo DS	references/platforms/nds.md

For an unlisted platform, establish only the constraints that can change the current decision.

Artifact requirements

Violating one of these requirements invalidates the affected release claim. A mechanically invalid input or artifact must also stop the product build unless the declared development/PoC input policy permits it. Record every exception and the resulting limit on the claim.

• Never commit source ROM or disc images, or unauthorized third-party assets. Follow references/conventions/project-conventions.md §6.
• Plan every final change from an immutable source and fail on overlapping writers, protected-range writes, or unexplained final differences. Follow references/conventions/project-conventions.md §5.2.
• Never silently skip or substitute a character whose glyph or encoding is missing. An unmapped character fails the product build. A product build under the development/PoC input policy may proceed only under references/conventions/translation-artifacts.md §5 and cannot produce a release candidate.
• A rule-based batch transformation that changes translated prose requires prior human approval of the rule, pre-transformation text, scope, and expected impact. Follow references/strategy/translation-workflow.md §5.2.