chore(architecture): enforce layer boundaries

2026-07-03 09:34:21 +02:00
parent a8dbd26474
commit d7406e803a
14 changed files with 354 additions and 17 deletions
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -6,7 +6,7 @@ Follow these rules for the whole repository. More specific `AGENTS.md` files ove
 - `core/`: pure domain models only. See `core/AGENTS.md`.
 - `commands/`: the only write path for application state.
 - `editor/`: transient editor/app state types and app store, e.g. viewport/camera and selection.
- `keybinds/`: keybind resolution; global consumer first, command fallback second.
+- `input/`: keyboard, pointer, mouse, touch, pen, and wheel resolution; global consumer first, command fallback second.
 - `renderer/`: renders the current `ImageDocument` using the graphics backend, e.g. WebGL.
 - `view/`: React UI shell and controls only.

@@ -16,13 +16,13 @@ Follow these rules for the whole repository. More specific `AGENTS.md` files ove
 - Commands are the only code allowed to create, replace, or mutate persistent or transient state.
 - React must not own, manage, derive authoritative, or alter document/editor state.
 - React may hold only local ephemeral UI details with no app meaning, e.g. open popover, hovered button, uncontrolled input draft before command submit.
- Do not update state directly from React event handlers, renderer callbacks, effects, stores, services, or keybind handlers. Dispatch a command instead.
+- Do not update state directly from React event handlers, renderer callbacks, effects, stores, services, or input handlers. Dispatch a command instead.

 ## Commands
 - Every state change must be modeled as a command with an explicit id, payload, and context.
 - Commands must be deterministic and testable; avoid DOM, React, WebGL, timers, network, and filesystem access inside command execution.
 - Commands return/apply the next state; they should preserve domain invariants and validate payloads before changing state.
- UI actions, menus, toolbar buttons, keybinds, and renderer interactions all request changes by dispatching commands.
+- UI actions, menus, toolbar buttons, keyboard shortcuts, pointer/wheel gestures, and renderer interactions all request changes by dispatching commands.

 ## React / View
 - React displays current state and exposes user intent.
@@ -36,18 +36,18 @@ Follow these rules for the whole repository. More specific `AGENTS.md` files ove
 - Renderer interactions may emit intents/events that are translated into commands.
 - Keep rendering backend details isolated behind renderer APIs; do not leak WebGL objects into `core/`, `commands/`, or React state.

-## Keybinds
- Keybind handling is ordered and explicit.
- First check the global keybind consumer/map.
- If the global consumer handles the keybind, stop.
- If not consumed globally, the keybind may be consumed by dispatching a command.
- Keybind handlers must not mutate state directly.
- Avoid ad-hoc component-local shortcuts unless they are purely local UI behavior and cannot affect app/editor/document state.
+## Input
+- Input handling is ordered and explicit for keyboard, pointer, mouse, touch, pen, and wheel events.
+- First check the global input consumer/map.
+- If the global consumer handles the input, stop.
+- If not consumed globally, input may be consumed by dispatching a command.
+- Input handlers must not mutate state directly.
+- Avoid ad-hoc component-local shortcuts/gestures unless they are purely local UI behavior and cannot affect app/editor/document state.

 ## Imports
 - `core/` imports nothing from app layers.
 - `commands/` may import `core/` and `editor/`; avoid importing React or renderer backend APIs.
 - `editor/` may import `core/` types and command dispatch infrastructure; it must not import React, renderer, storage, or backend APIs.
- `keybinds/` may import command dispatch types; it must not mutate state directly.
+- `input/` may import command dispatch types and shared geometry types; it must not mutate state directly.
 - `renderer/` may import `core/` and `editor/` types; it must not import React components.
 - `view/` may import UI components and command dispatch interfaces; avoid importing renderer internals except through stable view-facing adapters.
--- a/bun.lock
+++ b/bun.lock
@@ -15,14 +15,43 @@
        "tw-animate-css": "^1.4.0",
      },
      "devDependencies": {
+        "@eslint/js": "^10.0.1",
        "@types/bun": "latest",
        "@types/react": "^19",
        "@types/react-dom": "^19",
+        "eslint": "^10.6.0",
        "tailwindcss": "^4.1.11",
+        "typescript-eslint": "^8.62.1",
      },
    },
  },
  "packages": {
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+
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+
+    "@humanfs/node": ["@humanfs/node@0.16.8", "", { "dependencies": { "@humanfs/core": "^0.19.2", "@humanfs/types": "^0.15.0", "@humanwhocodes/retry": "^0.4.0" } }, "sha512-gE1eQNZ3R++kTzFUpdGlpmy8kDZD/MLyHqDwqjkVQI0JMdI1D51sy1H958PNXYkM2rAac7e5/CnIKZrHtPh3BQ=="],
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+
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+
+    "@humanwhocodes/retry": ["@humanwhocodes/retry@0.4.3", "", {}, "sha512-bV0Tgo9K4hfPCek+aMAn81RppFKv2ySDQeMoSZuvTASywNTnVJCArCZE2FWqpvIatKu7VMRLWlR1EazvVhDyhQ=="],
+
    "@oven/bun-darwin-aarch64": ["@oven/bun-darwin-aarch64@1.3.14", "", { "os": "darwin", "cpu": "arm64" }, "sha512-Omj20SuiHBOUjUBIyqtkNjSUIjOtEOJwmbix/ZyFH4BaQ6OZTaaRWIR4TjHVz0yadHgli6lLTiAh1uarnvD49A=="],

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@@ -61,12 +90,48 @@

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+    "@types/esrecurse": ["@types/esrecurse@4.3.1", "", {}, "sha512-xJBAbDifo5hpffDBuHl0Y8ywswbiAp/Wi7Y/GtAgSlZyIABppyurxVueOPE8LUQOxdlgi6Zqce7uoEpqNTeiUw=="],
+
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+
+    "@types/json-schema": ["@types/json-schema@7.0.15", "", {}, "sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA=="],
+
    "@types/node": ["@types/node@26.1.0", "", { "dependencies": { "undici-types": "~8.3.0" } }, "sha512-O0A1G3xPGy4w7AgQdAQYUlQ+BKk2Oovw8eRpofyp5KdBZULnbe+WqaOVNrm705SHphCiG4XHsACrSmPu1f+Kgw=="],

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+    "acorn": ["acorn@8.17.0", "", { "bin": { "acorn": "bin/acorn" } }, "sha512-xRQbDb9BnwDafYNn6Vwl839DYVjqXYb1XVGtWAZ1kcDc6iwAL4hg3B1dZlRiuENFeO2H53gFG3in621AdERVAg=="],
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+
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@@ -77,20 +142,134 @@

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+    "cross-spawn": ["cross-spawn@7.0.6", "", { "dependencies": { "path-key": "^3.1.0", "shebang-command": "^2.0.0", "which": "^2.0.1" } }, "sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA=="],
+
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+    "debug": ["debug@4.4.3", "", { "dependencies": { "ms": "^2.1.3" }, "peerDependencies": { "supports-color": "*" }, "optionalPeers": ["supports-color"] }, "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA=="],
+
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+
+    "escape-string-regexp": ["escape-string-regexp@4.0.0", "", {}, "sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA=="],
+
+    "eslint": ["eslint@10.6.0", "", { "dependencies": { "@eslint-community/eslint-utils": "^4.8.0", "@eslint-community/regexpp": "^4.12.2", "@eslint/config-array": "^0.23.5", "@eslint/config-helpers": "^0.6.0", "@eslint/core": "^1.2.1", "@eslint/plugin-kit": "^0.7.2", "@humanfs/node": "^0.16.6", "@humanwhocodes/module-importer": "^1.0.1", "@humanwhocodes/retry": "^0.4.2", "@types/estree": "^1.0.6", "ajv": "^6.14.0", "cross-spawn": "^7.0.6", "debug": "^4.3.2", "escape-string-regexp": "^4.0.0", "eslint-scope": "^9.1.2", "eslint-visitor-keys": "^5.0.1", "espree": "^11.2.0", "esquery": "^1.7.0", "esutils": "^2.0.2", "fast-deep-equal": "^3.1.3", "file-entry-cache": "^8.0.0", "find-up": "^5.0.0", "glob-parent": "^6.0.2", "ignore": "^5.2.0", "imurmurhash": "^0.1.4", "is-glob": "^4.0.0", "json-stable-stringify-without-jsonify": "^1.0.1", "minimatch": "^10.2.4", "natural-compare": "^1.4.0", "optionator": "^0.9.3" }, "peerDependencies": { "jiti": "*" }, "optionalPeers": ["jiti"], "bin": { "eslint": "bin/eslint.js" } }, "sha512-6lVbcqSodALYo+4ELD0heG6lFiFxnLMuLkiMi2qV8LMp54N8tE8FT1GMH+ev4Ti00nFjNze2+Su6DsV5OQW3Dg=="],
+
+    "eslint-scope": ["eslint-scope@9.1.2", "", { "dependencies": { "@types/esrecurse": "^4.3.1", "@types/estree": "^1.0.8", "esrecurse": "^4.3.0", "estraverse": "^5.2.0" } }, "sha512-xS90H51cKw0jltxmvmHy2Iai1LIqrfbw57b79w/J7MfvDfkIkFZ+kj6zC3BjtUwh150HsSSdxXZcsuv72miDFQ=="],
+
+    "eslint-visitor-keys": ["eslint-visitor-keys@5.0.1", "", {}, "sha512-tD40eHxA35h0PEIZNeIjkHoDR4YjjJp34biM0mDvplBe//mB+IHCqHDGV7pxF+7MklTvighcCPPZC7ynWyjdTA=="],
+
+    "espree": ["espree@11.2.0", "", { "dependencies": { "acorn": "^8.16.0", "acorn-jsx": "^5.3.2", "eslint-visitor-keys": "^5.0.1" } }, "sha512-7p3DrVEIopW1B1avAGLuCSh1jubc01H2JHc8B4qqGblmg5gI9yumBgACjWo4JlIc04ufug4xJ3SQI8HkS/Rgzw=="],
+
+    "esquery": ["esquery@1.7.0", "", { "dependencies": { "estraverse": "^5.1.0" } }, "sha512-Ap6G0WQwcU/LHsvLwON1fAQX9Zp0A2Y6Y/cJBl9r/JbW90Zyg4/zbG6zzKa2OTALELarYHmKu0GhpM5EO+7T0g=="],
+
+    "esrecurse": ["esrecurse@4.3.0", "", { "dependencies": { "estraverse": "^5.2.0" } }, "sha512-KmfKL3b6G+RXvP8N1vr3Tq1kL/oCFgn2NYXEtqP8/L3pKapUA4G8cFVaoF3SU323CD4XypR/ffioHmkti6/Tag=="],
+
+    "estraverse": ["estraverse@5.3.0", "", {}, "sha512-MMdARuVEQziNTeJD8DgMqmhwR11BRQ/cBP+pLtYdSTnf3MIO8fFeiINEbX36ZdNlfU/7A9f3gUw49B3oQsvwBA=="],
+
+    "esutils": ["esutils@2.0.3", "", {}, "sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g=="],
+
+    "fast-deep-equal": ["fast-deep-equal@3.1.3", "", {}, "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q=="],
+
+    "fast-json-stable-stringify": ["fast-json-stable-stringify@2.1.0", "", {}, "sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw=="],
+
+    "fast-levenshtein": ["fast-levenshtein@2.0.6", "", {}, "sha512-DCXu6Ifhqcks7TZKY3Hxp3y6qphY5SJZmrWMDrKcERSOXWQdMhU9Ig/PYrzyw/ul9jOIyh0N4M0tbC5hodg8dw=="],
+
+    "fdir": ["fdir@6.5.0", "", { "peerDependencies": { "picomatch": "^3 || ^4" }, "optionalPeers": ["picomatch"] }, "sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg=="],
+
+    "file-entry-cache": ["file-entry-cache@8.0.0", "", { "dependencies": { "flat-cache": "^4.0.0" } }, "sha512-XXTUwCvisa5oacNGRP9SfNtYBNAMi+RPwBFmblZEF7N7swHYQS6/Zfk7SRwx4D5j3CH211YNRco1DEMNVfZCnQ=="],
+
+    "find-up": ["find-up@5.0.0", "", { "dependencies": { "locate-path": "^6.0.0", "path-exists": "^4.0.0" } }, "sha512-78/PXT1wlLLDgTzDs7sjq9hzz0vXD+zn+7wypEe4fXQxCmdmqfGsEPQxmiCSQI3ajFV91bVSsvNtrJRiW6nGng=="],
+
+    "flat-cache": ["flat-cache@4.0.1", "", { "dependencies": { "flatted": "^3.2.9", "keyv": "^4.5.4" } }, "sha512-f7ccFPK3SXFHpx15UIGyRJ/FJQctuKZ0zVuN3frBo4HnK3cay9VEW0R6yPYFHC0AgqhukPzKjq22t5DmAyqGyw=="],
+
+    "flatted": ["flatted@3.4.2", "", {}, "sha512-PjDse7RzhcPkIJwy5t7KPWQSZ9cAbzQXcafsetQoD7sOJRQlGikNbx7yZp2OotDnJyrDcbyRq3Ttb18iYOqkxA=="],
+
+    "glob-parent": ["glob-parent@6.0.2", "", { "dependencies": { "is-glob": "^4.0.3" } }, "sha512-XxwI8EOhVQgWp6iDL+3b0r86f4d6AX6zSU55HfB4ydCEuXLXc5FcYeOu+nnGftS4TEju/11rt4KJPTMgbfmv4A=="],
+
+    "ignore": ["ignore@5.3.2", "", {}, "sha512-hsBTNUqQTDwkWtcdYI2i06Y/nUBEsNEDJKjWdigLvegy8kDuJAS8uRlpkkcQpyEXL0Z/pjDy5HBmMjRCJ2gq+g=="],
+
+    "imurmurhash": ["imurmurhash@0.1.4", "", {}, "sha512-JmXMZ6wuvDmLiHEml9ykzqO6lwFbof0GG4IkcGaENdCRDDmMVnny7s5HsIgHCbaq0w2MyPhDqkhTUgS2LU2PHA=="],
+
+    "is-extglob": ["is-extglob@2.1.1", "", {}, "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ=="],
+
+    "is-glob": ["is-glob@4.0.3", "", { "dependencies": { "is-extglob": "^2.1.1" } }, "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg=="],
+
+    "isexe": ["isexe@2.0.0", "", {}, "sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw=="],
+
+    "json-buffer": ["json-buffer@3.0.1", "", {}, "sha512-4bV5BfR2mqfQTJm+V5tPPdf+ZpuhiIvTuAB5g8kcrXOZpTT/QwwVRWBywX1ozr6lEuPdbHxwaJlm9G6mI2sfSQ=="],
+
+    "json-schema-traverse": ["json-schema-traverse@0.4.1", "", {}, "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg=="],
+
+    "json-stable-stringify-without-jsonify": ["json-stable-stringify-without-jsonify@1.0.1", "", {}, "sha512-Bdboy+l7tA3OGW6FjyFHWkP5LuByj1Tk33Ljyq0axyzdk9//JSi2u3fP1QSmd1KNwq6VOKYGlAu87CisVir6Pw=="],
+
+    "keyv": ["keyv@4.5.4", "", { "dependencies": { "json-buffer": "3.0.1" } }, "sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw=="],
+
+    "levn": ["levn@0.4.1", "", { "dependencies": { "prelude-ls": "^1.2.1", "type-check": "~0.4.0" } }, "sha512-+bT2uH4E5LGE7h/n3evcS/sQlJXCpIp6ym8OWJ5eV6+67Dsql/LaaT7qJBAt2rzfoa/5QBGBhxDix1dMt2kQKQ=="],
+
+    "locate-path": ["locate-path@6.0.0", "", { "dependencies": { "p-locate": "^5.0.0" } }, "sha512-iPZK6eYjbxRu3uB4/WZ3EsEIMJFMqAoopl3R+zuq0UjcAm/MO6KCweDgPfP3elTztoKP3KtnVHxTn2NHBSDVUw=="],
+
+    "minimatch": ["minimatch@10.2.5", "", { "dependencies": { "brace-expansion": "^5.0.5" } }, "sha512-MULkVLfKGYDFYejP07QOurDLLQpcjk7Fw+7jXS2R2czRQzR56yHRveU5NDJEOviH+hETZKSkIk5c+T23GjFUMg=="],
+
+    "ms": ["ms@2.1.3", "", {}, "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="],
+
+    "natural-compare": ["natural-compare@1.4.0", "", {}, "sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw=="],
+
+    "optionator": ["optionator@0.9.4", "", { "dependencies": { "deep-is": "^0.1.3", "fast-levenshtein": "^2.0.6", "levn": "^0.4.1", "prelude-ls": "^1.2.1", "type-check": "^0.4.0", "word-wrap": "^1.2.5" } }, "sha512-6IpQ7mKUxRcZNLIObR0hz7lxsapSSIYNZJwXPGeF0mTVqGKFIXj1DQcMoT22S3ROcLyY/rz0PWaWZ9ayWmad9g=="],
+
+    "p-limit": ["p-limit@3.1.0", "", { "dependencies": { "yocto-queue": "^0.1.0" } }, "sha512-TYOanM3wGwNGsZN2cVTYPArw454xnXj5qmWF1bEoAc4+cU/ol7GVh7odevjp1FNHduHc3KZMcFduxU5Xc6uJRQ=="],
+
+    "p-locate": ["p-locate@5.0.0", "", { "dependencies": { "p-limit": "^3.0.2" } }, "sha512-LaNjtRWUBY++zB5nE/NwcaoMylSPk+S+ZHNB1TzdbMJMny6dynpAGt7X/tl/QYq3TIeE6nxHppbo2LGymrG5Pw=="],
+
+    "path-exists": ["path-exists@4.0.0", "", {}, "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w=="],
+
+    "path-key": ["path-key@3.1.1", "", {}, "sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q=="],
+
+    "picomatch": ["picomatch@4.0.5", "", {}, "sha512-RvwwcruNjI1ncT5xRakeyS9Lf8lcItv34KD+aif+VH9kduAyfYBipGh12274xtenIPZ119/R9BdTBa8gAwSh0A=="],
+
+    "prelude-ls": ["prelude-ls@1.2.1", "", {}, "sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g=="],
+
+    "punycode": ["punycode@2.3.1", "", {}, "sha512-vYt7UD1U9Wg6138shLtLOvdAu+8DsC/ilFtEVHcH+wydcSpNE20AfSOduf6MkRFahL5FY7X1oU7nKVZFtfq8Fg=="],
+
    "react": ["react@19.2.7", "", {}, "sha512-HNe9WslTbXmFK8o8cmwgAeJFSBvt1bPdHCVKtaaV+WlAN36mpT4hcRpwbf3fY56ar2oIXzsBpOAiIRHAdY0OlQ=="],

    "react-dom": ["react-dom@19.2.7", "", { "dependencies": { "scheduler": "^0.27.0" }, "peerDependencies": { "react": "^19.2.7" } }, "sha512-t0BRVXvbiE/o20Hfw669rLbMCDWtYZLvmJigy2f0MxsXF+71pxhR3xOkspmsO8h3ZlNzyibAmtCa3l4lYKk6gQ=="],

    "scheduler": ["scheduler@0.27.0", "", {}, "sha512-eNv+WrVbKu1f3vbYJT/xtiF5syA5HPIMtf9IgY/nKg0sWqzAUEvqY/xm7OcZc/qafLx/iO9FgOmeSAp4v5ti/Q=="],

+    "semver": ["semver@7.8.5", "", { "bin": { "semver": "bin/semver.js" } }, "sha512-Y7/KDsb8LjooZpwaqGyulO6DQlksgCncchHGk+sZIY4SBvUocMBEFH5Ur1fI4dV+Jvl0w6cjvucaIi40puRioA=="],
+
+    "shebang-command": ["shebang-command@2.0.0", "", { "dependencies": { "shebang-regex": "^3.0.0" } }, "sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA=="],
+
+    "shebang-regex": ["shebang-regex@3.0.0", "", {}, "sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A=="],
+
    "tailwind-merge": ["tailwind-merge@3.6.0", "", {}, "sha512-uxL7qAVQriqRQPAyK3pj66VqskWqoZ37PW94jwOTwNfq/z9oyu1V+eqrZqtR2+fCiXdYOZe/Modt8GtvqNzu+w=="],

    "tailwindcss": ["tailwindcss@4.3.2", "", {}, "sha512-WtctNNSH8A9jlMIqxzuYumOHU5uGZyRv0Q5svQl+oEPy5w84YpBxdb7MdqyiSPQge5jTJ6zFQLq0PFygdccSBA=="],

+    "tinyglobby": ["tinyglobby@0.2.17", "", { "dependencies": { "fdir": "^6.5.0", "picomatch": "^4.0.4" } }, "sha512-wXR/dYpcqKmfWpEdZjiKJOwCNFndD0DMnrW/cYjVGttEkBfVgcLFHoNrlj47mjOVic9yyNu65alsgF4NQyTa2g=="],
+
+    "ts-api-utils": ["ts-api-utils@2.5.0", "", { "peerDependencies": { "typescript": ">=4.8.4" } }, "sha512-OJ/ibxhPlqrMM0UiNHJ/0CKQkoKF243/AEmplt3qpRgkW8VG7IfOS41h7V8TjITqdByHzrjcS/2si+y4lIh8NA=="],
+
    "tw-animate-css": ["tw-animate-css@1.4.0", "", {}, "sha512-7bziOlRqH0hJx80h/3mbicLW7o8qLsH5+RaLR2t+OHM3D0JlWGODQKQ4cxbK7WlvmUxpcj6Kgu6EKqjrGFe3QQ=="],

+    "type-check": ["type-check@0.4.0", "", { "dependencies": { "prelude-ls": "^1.2.1" } }, "sha512-XleUoc9uwGXqjWwXaUTZAmzMcFZ5858QA2vvx1Ur5xIcixXIP+8LnFDgRplU30us6teqdlskFfu+ae4K79Ooew=="],
+
+    "typescript": ["typescript@6.0.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-y2TvuxSZPDyQakkFRPZHKFm+KKVqIisdg9/CZwm9ftvKXLP8NRWj38/ODjNbr43SsoXqNuAisEf1GdCxqWcdBw=="],
+
+    "typescript-eslint": ["typescript-eslint@8.62.1", "", { "dependencies": { "@typescript-eslint/eslint-plugin": "8.62.1", "@typescript-eslint/parser": "8.62.1", "@typescript-eslint/typescript-estree": "8.62.1", "@typescript-eslint/utils": "8.62.1" }, "peerDependencies": { "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0", "typescript": ">=4.8.4 <6.1.0" } }, "sha512-vymnnM5g0AKQDSAyfP12nMIBvgwgA42syg74kkuZ4x1VuTzwQKwc5h9rGxeShCjny5o+zWAb6OEoz7XLgrIkIw=="],
+
    "undici-types": ["undici-types@8.3.0", "", {}, "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ=="],
+
+    "uri-js": ["uri-js@4.4.1", "", { "dependencies": { "punycode": "^2.1.0" } }, "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg=="],
+
+    "which": ["which@2.0.2", "", { "dependencies": { "isexe": "^2.0.0" }, "bin": { "node-which": "./bin/node-which" } }, "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA=="],
+
+    "word-wrap": ["word-wrap@1.2.5", "", {}, "sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA=="],
+
+    "yocto-queue": ["yocto-queue@0.1.0", "", {}, "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q=="],
+
+    "@eslint-community/eslint-utils/eslint-visitor-keys": ["eslint-visitor-keys@3.4.3", "", {}, "sha512-wpc+LXeiyiisxPlEkUzU6svyS1frIO3Mgxj1fdy7Pm8Ygzguax2N3Fa/D/ag1WqbOprdI+uY6wMUl8/a2G+iag=="],
+
+    "@typescript-eslint/eslint-plugin/ignore": ["ignore@7.0.5", "", {}, "sha512-Hs59xBNfUIunMFgWAbGX5cq6893IbWg4KnrjbYwX3tx0ztorVgTDA6B2sxf8ejHJ4wz8BqGUMYlnzNBer5NvGg=="],
  }
 }
--- a/commands/AGENTS.md
+++ b/commands/AGENTS.md
@@ -0,0 +1,10 @@
+# Commands Rules
+
+- `commands/` is the only place state changes are implemented.
+- Commands may change persistent `ImageDocument` state and transient `EditorState`.
+- Commands must be deterministic, testable, and side-effect free.
+- Do not import React, DOM UI, renderer/WebGL internals, storage, network, timers, or filesystem APIs.
+- Validate payloads before applying changes.
+- Preserve all `core/` and `editor/` invariants.
+- Return the next `AppState`; do not mutate existing state objects in place.
+- Every command needs a stable id, clear payload type, and focused responsibility.
--- a/editor/AGENTS.md
+++ b/editor/AGENTS.md
@@ -0,0 +1,8 @@
+# Editor State Rules
+
+- `editor/` owns transient app/editor state types and the app store.
+- Transient state includes viewport/camera, selection, tools, active entities, and drag/session state.
+- Do not put persisted document fields here; use `core/` for saved image document state.
+- Do not import React, renderer/WebGL, storage, network, or filesystem APIs.
+- The store must expose read/subscribe and command dispatch only; no public direct setters.
+- State changes must flow through commands, including viewport/camera changes.
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -0,0 +1,85 @@
+import js from "@eslint/js";
+import tseslint from "typescript-eslint";
+
+const appLayerImports = [
+  "@view/*",
+  "@renderer/*",
+  "@commands/*",
+  "@editor/*",
+  "@input/*",
+  "../view/*",
+  "../renderer/*",
+  "../commands/*",
+  "../editor/*",
+  "../input/*",
+];
+
+export default tseslint.config(
+  {
+    ignores: ["dist/**", "node_modules/**", "eslint.config.js"],
+  },
+  js.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    files: ["**/*.{ts,tsx}"],
+    rules: {
+      "@typescript-eslint/no-explicit-any": "error",
+      "@typescript-eslint/consistent-type-imports": ["error", { prefer: "type-imports" }],
+    },
+  },
+  {
+    files: ["core/**/*.{ts,tsx}"],
+    rules: {
+      "no-restricted-imports": [
+        "error",
+        {
+          patterns: appLayerImports,
+        },
+      ],
+    },
+  },
+  {
+    files: ["commands/**/*.{ts,tsx}"],
+    rules: {
+      "no-restricted-imports": [
+        "error",
+        {
+          patterns: ["@view/*", "@renderer/*", "../view/*", "../renderer/*", "react", "react-dom"],
+        },
+      ],
+    },
+  },
+  {
+    files: ["editor/**/*.{ts,tsx}"],
+    rules: {
+      "no-restricted-imports": [
+        "error",
+        {
+          patterns: ["@view/*", "@renderer/*", "../view/*", "../renderer/*", "react", "react-dom"],
+        },
+      ],
+    },
+  },
+  {
+    files: ["renderer/**/*.{ts,tsx}"],
+    rules: {
+      "no-restricted-imports": [
+        "error",
+        {
+          patterns: ["@view/*", "../view/*", "react", "react-dom"],
+        },
+      ],
+    },
+  },
+  {
+    files: ["input/**/*.{ts,tsx}"],
+    rules: {
+      "no-restricted-imports": [
+        "error",
+        {
+          patterns: ["@view/*", "@renderer/*", "@editor/*", "../view/*", "../renderer/*", "../editor/*", "react", "react-dom"],
+        },
+      ],
+    },
+  },
+);
--- a/input/AGENTS.md
+++ b/input/AGENTS.md
@@ -0,0 +1,9 @@
+# Input Rules
+
+- `input/` resolves keyboard, pointer, mouse, touch, pen, and wheel input only.
+- Resolution order is strict: global consumer first, command fallback second.
+- If the global consumer handles input, stop and do not dispatch a command.
+- Input handlers must never mutate state directly.
+- Input may dispatch commands by id with payloads.
+- Keep this layer independent from React, renderer, editor store internals, and persisted core domain models.
+- DOM/browser events should be normalized into small input event types before command mapping.
--- a/input/index.ts
+++ b/input/index.ts
@@ -0,0 +1,3 @@
+export type { CommandKeybind, GlobalKeybindConsumer, Keybind, KeybindEvent, KeybindMap } from "./keyboard";
+export { handleKeybind, keybindFromEvent } from "./keyboard";
+export type { GlobalPointerConsumer, GlobalWheelConsumer, PointerInputEvent, WheelInputEvent } from "./pointer";
--- a/keybinds/keybind.ts
+++ b/keybinds/keybind.ts
--- a/input/pointer.ts
+++ b/input/pointer.ts
@@ -0,0 +1,24 @@
+import type { Vec2D } from "@core/geometry";
+
+export type PointerInputEvent = {
+  pointerId: number;
+  pointerType: "mouse" | "pen" | "touch";
+  position: Vec2D;
+  buttons: number;
+  altKey: boolean;
+  ctrlKey: boolean;
+  metaKey: boolean;
+  shiftKey: boolean;
+};
+
+export type WheelInputEvent = {
+  position: Vec2D;
+  delta: Vec2D;
+  altKey: boolean;
+  ctrlKey: boolean;
+  metaKey: boolean;
+  shiftKey: boolean;
+};
+
+export type GlobalPointerConsumer = (event: PointerInputEvent) => boolean;
+export type GlobalWheelConsumer = (event: WheelInputEvent) => boolean;
--- a/keybinds/index.ts
+++ b/keybinds/index.ts
@@ -1,2 +0,0 @@
-export type { CommandKeybind, GlobalKeybindConsumer, Keybind, KeybindEvent, KeybindMap } from "./keybind";
-export { handleKeybind, keybindFromEvent } from "./keybind";
--- a/package.json
+++ b/package.json
@@ -6,7 +6,8 @@
  "scripts": {
    "dev": "bun --hot index.ts",
    "start": "NODE_ENV=production bun index.ts",
-    "build": "bun run build.ts"
+    "build": "bun run build.ts",
+    "lint": "eslint ."
  },
  "dependencies": {
    "@radix-ui/react-slot": "^1.2.3",
@@ -19,9 +20,12 @@
    "tw-animate-css": "^1.4.0"
  },
  "devDependencies": {
+    "@eslint/js": "^10.0.1",
+    "@types/bun": "latest",
    "@types/react": "^19",
    "@types/react-dom": "^19",
-    "@types/bun": "latest",
-    "tailwindcss": "^4.1.11"
+    "eslint": "^10.6.0",
+    "tailwindcss": "^4.1.11",
+    "typescript-eslint": "^8.62.1"
  }
 }
--- a/renderer/AGENTS.md
+++ b/renderer/AGENTS.md
@@ -0,0 +1,9 @@
+# Renderer Rules
+
+- `renderer/` draws the current `ImageDocument` plus read-only editor overlays.
+- Rendering backend details, e.g. WebGL objects, stay isolated here.
+- Do not mutate document or editor state directly.
+- Renderer interactions may emit intents/events only; callers translate them into commands.
+- Do not import React components or view code.
+- Do not leak backend objects into `core/`, `commands/`, `editor/`, or React state.
+- Cache only derived rendering data; authoritative state lives in `core/` and `editor/`.
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -29,7 +29,7 @@
      "@renderer/*": ["./renderer/*"],
      "@commands/*": ["./commands/*"],
      "@editor/*": ["./editor/*"],
-      "@keybinds/*": ["./keybinds/*"]
+      "@input/*": ["./input/*"]
    },

    // Some stricter flags (disabled by default)
--- a/view/AGENTS.md
+++ b/view/AGENTS.md
@@ -0,0 +1,8 @@
+# View / React Rules
+
+- React is display-only UI and user-intent capture.
+- React must not own, manage, derive authoritative, or mutate document/editor state.
+- React may keep only local UI state with no app meaning, e.g. popover open state or unsent input draft.
+- Event handlers, toolbar buttons, menus, and effects must request state changes by dispatching commands.
+- Do not implement business rules, document mutation, renderer backend logic, or editor workflow ownership in components.
+- Effects are for subscriptions and UI integration only.