[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10,"_11":12},"actionData","errors","root",{"_228":-5,"_231":232,"_233":234},"routes/shell",{"_40":41,"_227":-5,"_228":-5,"_229":230},"routes/repo",{"_33":-7,"_34":35,"_36":37,"_38":39,"_40":41,"_42":31,"_43":31,"_44":31,"_45":31,"_46":31,"_47":31,"_48":49,"_50":49,"_51":31,"_52":-7,"_53":-7,"_54":55,"_56":57,"_58":59,"_60":-5,"_61":62,"_63":64,"_65":66,"_67":68},"routes/repo.blob",{"_13":14,"_15":16,"_17":18,"_19":20,"_21":14,"_22":23,"_24":-5,"_25":26,"_27":28,"_28":29,"_30":31,"_32":14},"ref","7c690cbcfdf23f1e1925f493bd4e10949afcb76d","path","apps/server/src/plan/edit.test.ts","oid","6725757ce071916e43ea02489ffd9df2793c9f84","size",25116,"commit","mounts",[],"source","plain",{"_13":14,"_15":16},"kind","text","/**\n * Editing the plan the way an agent has to.\n *\n * An agent cannot hold a cursor, so it edits by position in the list of\n * top-level blocks. Positions move under concurrent editing, which is why a\n * batch names the revision it was written against and is refused outright if\n * the plan has moved on — a half-applied batch would be worse than none.\n */\n\nimport { beforeEach, describe, expect, it } from \"bun:test\";\n\nimport * as edit from \"./edit\";\nimport * as room from \"./room\";\n\nimport * as Questions from \"../questions/store\";\nimport type { Plan } from \"./service\";\n\nconst SOURCE = `# Title\n\nFirst paragraph.\n\nSecond paragraph.\n`;\nconst DIAGRAM =\n\t'```seecode\\n{\"type\":\"architecture\",\"nodes\":[{\"id\":\"web\",\"label\":\"Browser\",\"row\":0,\"col\":0},{\"id\":\"api\",\"label\":\"API\",\"row\":0,\"col\":1}],\"edges\":[[\"web\",\"api\"]]}\\n```\\n';\nconst MALFORMED_DIAGRAM = '```seecode\\n{\"type\":\\n```\\n';\n\n/** Enough of a plan for the edit engine, which only needs these fields. */\nasync function plan(source = SOURCE): Promise {\n\treturn {\n\t\tdocument: await room.create(source),\n\t\trevision: 1,\n\t\toutlines: new Map(),\n\t\tquestions: Questions.create(),\n\t} as Plan;\n}\n\nlet subject: Plan;\n\nbeforeEach(async () => {\n\tsubject = await plan();\n});\n\ndescribe(\"reading\", () => {\n\tit(\"describes each top-level block with a preview and a digest\", () => {\n\t\tlet blocks = edit.outline(subject);\n\n\t\texpect(blocks.map(block => block.type)).toEqual([\"heading\", \"paragraph\", \"paragraph\"]);\n\t\texpect(blocks[0]?.preview).toBe(\"Title\");\n\t\texpect(blocks[0]?.digest).toMatch(/^sha256:[0-9a-f]{64}$/);\n\t});\n});\n\ndescribe(\"applying a batch\", () => {\n\tit(\"authors a valid diagram through the revision-checked edit path\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{ op: \"insert\", index: 1, source: DIAGRAM }]);\n\n\t\texpect(outcome).toMatchObject({ ok: true, touched: [2] });\n\t\texpect(room.project(subject.document)).toContain(DIAGRAM.trim());\n\t});\n\n\tit(\"revises a diagram only when its new spec renders\", async () => {\n\t\tlet held = await plan(`# Title\\n\\n${DIAGRAM}`);\n\t\texpect(edit.apply(held, 1, [{ op: \"replace\", index: 1, source: MALFORMED_DIAGRAM }]))\n\t\t\t.toMatchObject({ ok: false, reason: \"invalid\" });\n\t\texpect(edit.source(held)).toContain(DIAGRAM.trim());\n\t\texpect(\n\t\t\tedit.apply(held, 1, [{\n\t\t\t\top: \"replace\",\n\t\t\t\tindex: 1,\n\t\t\t\tsource: DIAGRAM.replace(\"Browser\", \"Reader\"),\n\t\t\t}]).ok,\n\t\t).toBe(true);\n\t\texpect(edit.source(held)).toContain('\"label\":\"Reader\"');\n\t});\n\n\tit(\"moves a diagram without changing its canonical source\", async () => {\n\t\tlet held = await plan(`# Title\\n\\n${DIAGRAM}\\nSurrounding prose.\\n`);\n\t\tlet outcome = edit.apply(held, 1, [{ op: \"move\", index: 1, to: 2 }]);\n\n\t\texpect(outcome.ok).toBe(true);\n\t\texpect(edit.source(held)).toContain(DIAGRAM.trim());\n\t\texpect(edit.source(held).indexOf(\"Surrounding prose.\")).toBeLessThan(\n\t\t\tedit.source(held).indexOf(\"```seecode\"),\n\t\t);\n\t});\n\n\tit(\"inserts after the block it names\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{ op: \"insert\", index: 0, source: \"Inserted.\\n\" }]);\n\n\t\texpect(outcome.ok).toBe(true);\n\t\texpect(room.project(subject.document)).toBe(\n\t\t\t\"# Title\\n\\nInserted.\\n\\nFirst paragraph.\\n\\nSecond paragraph.\\n\",\n\t\t);\n\t});\n\n\tit(\"replaces, deletes and moves\", () => {\n\t\texpect(edit.apply(subject, 1, [{ op: \"replace\", index: 1, source: \"Rewritten.\\n\" }]).ok)\n\t\t\t.toBe(true);\n\t\texpect(room.project(subject.document)).toContain(\"Rewritten.\");\n\n\t\texpect(edit.apply(subject, 1, [{ op: \"delete\", index: 2 }]).ok).toBe(true);\n\t\texpect(room.project(subject.document)).not.toContain(\"Second paragraph.\");\n\n\t\texpect(edit.apply(subject, 1, [{ op: \"move\", index: 0, to: 1 }]).ok).toBe(true);\n\t\texpect(room.project(subject.document)).toBe(\"Rewritten.\\n\\n# Title\\n\");\n\t});\n\n\t/**\n\t * Indices are resolved against the document as it was read, so two\n\t * operations in one batch cannot shift each other's targets out from under\n\t * them. Without this, `delete 0` followed by `replace 1` would silently hit\n\t * the wrong block.\n\t */\n\tit(\"resolves every index against the revision that was read\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [\n\t\t\t{ op: \"delete\", index: 0 },\n\t\t\t{ op: \"replace\", index: 1, source: \"Replaced first paragraph.\\n\" },\n\t\t]);\n\n\t\texpect(outcome.ok).toBe(true);\n\t\texpect(room.project(subject.document))\n\t\t\t.toBe(\"Replaced first paragraph.\\n\\nSecond paragraph.\\n\");\n\t});\n\n\tit(\"mints identity for a component the agent writes without one\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{\n\t\t\top: \"insert\",\n\t\t\tindex: 0,\n\t\t\tsource: '\\n\\tMind this.\\n\\n',\n\t\t}]);\n\n\t\texpect(outcome.ok).toBe(true);\n\t\texpect(room.project(subject.document)).toMatch(/ {\n\t/**\n\t * Which blocks a turn authored is what lets a decision be pointed at the\n\t * prose it produced, even when the agent forgets to say so. Object identity\n\t * is what tells them apart: a node carried over from the parsed base is the\n\t * same object, a staged one is not.\n\t */\n\tit(\"names the blocks it authored and not the ones it left alone\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{ op: \"replace\", index: 1, source: \"Rewritten.\\n\" }]);\n\n\t\texpect(outcome).toMatchObject({ ok: true, touched: [1] });\n\t});\n\n\tit(\"names each of several\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [\n\t\t\t{ op: \"replace\", index: 1, source: \"One.\\n\" },\n\t\t\t{ op: \"replace\", index: 2, source: \"Two.\\n\" },\n\t\t]);\n\n\t\texpect(outcome).toMatchObject({ ok: true, touched: [1, 2] });\n\t});\n\n\tit(\"names an insertion where it landed\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{ op: \"insert\", index: 0, source: \"Added.\\n\" }]);\n\n\t\texpect(outcome).toMatchObject({ ok: true, touched: [1] });\n\t});\n\n\t/** Moving a block writes nothing: it is the same prose, further down. */\n\tit(\"names nothing when a batch only moves blocks\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{ op: \"move\", index: 2, to: 0 }]);\n\n\t\texpect(outcome).toMatchObject({ ok: true, touched: [] });\n\t});\n\n\tit(\"names nothing when a batch only deletes\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{ op: \"delete\", index: 2 }]);\n\n\t\texpect(outcome).toMatchObject({ ok: true, touched: [] });\n\t});\n});\n\ndescribe(\"refusing a batch\", () => {\n\tit(\"rejects a malformed new diagram without applying surrounding prose\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [\n\t\t\t{ op: \"insert\", index: 0, source: \"New explanation.\\n\" },\n\t\t\t{ op: \"insert\", index: 1, source: MALFORMED_DIAGRAM },\n\t\t]);\n\n\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t\tif (outcome.ok || outcome.reason !== \"invalid\") return;\n\t\texpect(outcome.message).toContain(\"valid JSON\");\n\t\texpect(outcome.message.length).toBeLessThan(300);\n\t\texpect(room.project(subject.document)).toBe(SOURCE);\n\t});\n\n\tit(\"reports a diagram field error before changing the document\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{\n\t\t\top: \"insert\",\n\t\t\tindex: 0,\n\t\t\tsource: '```seecode\\n{\"type\":\"architecture\"}\\n```\\n',\n\t\t}]);\n\n\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t\tif (outcome.ok || outcome.reason !== \"invalid\") return;\n\t\texpect(outcome.message).toContain(\"nodes\");\n\t\texpect(room.project(subject.document)).toBe(SOURCE);\n\t});\n\n\tit(\"allows unrelated edits and moves around an existing malformed diagram\", async () => {\n\t\tlet held = await plan(`# Title\\n\\n${MALFORMED_DIAGRAM}\\nSurrounding prose.\\n`);\n\t\texpect(edit.apply(held, 1, [{ op: \"insert\", index: 0, source: \"Context.\\n\" }]).ok)\n\t\t\t.toBe(true);\n\t\texpect(edit.apply(held, 1, [{ op: \"move\", index: 1, to: 2 }]).ok).toBe(true);\n\t\texpect(room.project(held.document)).toContain(MALFORMED_DIAGRAM.trim());\n\t});\n\n\tit(\"refuses one aimed at a revision that has moved, and says what changed\", () => {\n\t\tlet outcome = edit.apply(subject, 0, [{ op: \"delete\", index: 0 }]);\n\n\t\texpect(outcome).toMatchObject({ ok: false, reason: \"stale\", revision: 1 });\n\t\t// Untouched.\n\t\texpect(room.project(subject.document)).toBe(SOURCE);\n\t});\n\n\tit(\"refuses a batch that targets one block twice\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [\n\t\t\t{ op: \"replace\", index: 1, source: \"One.\\n\" },\n\t\t\t{ op: \"delete\", index: 1 },\n\t\t]);\n\n\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t\texpect(room.project(subject.document)).toBe(SOURCE);\n\t});\n\n\t/**\n\t * `\\n\",\n\t\t}]);\n\n\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t\texpect(room.project(subject.document)).toBe(SOURCE);\n\t});\n\n\tit(\"refuses to leave the plan empty\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [\n\t\t\t{ op: \"delete\", index: 0 },\n\t\t\t{ op: \"delete\", index: 1 },\n\t\t\t{ op: \"delete\", index: 2 },\n\t\t]);\n\n\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t});\n\n\t/**\n\t * A model that copies a block it read copies the id with it, and durable\n\t * state hangs off that id. Two blocks claiming one is worse than refusing.\n\t */\n\tit(\"refuses a duplicated component id\", async () => {\n\t\tlet withCallout = await plan(\n\t\t\t'\\n\\tOne.\\n\\n',\n\t\t);\n\t\tlet outcome = edit.apply(withCallout, 1, [{\n\t\t\top: \"insert\",\n\t\t\tindex: 0,\n\t\t\tsource: '\\n\\tTwo.\\n\\n',\n\t\t}]);\n\n\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t\tif (outcome.ok) return;\n\t\texpect(outcome.reason === \"invalid\" && outcome.message).toContain(\"appears twice\");\n\t});\n\n\tit(\"refuses to author a questionnaire, which is asked rather than written\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{\n\t\t\top: \"insert\",\n\t\t\tindex: 0,\n\t\t\tsource: '\\n\\tx\\n\\n',\n\t\t}]);\n\n\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t});\n\n\tit(\"refuses to author a decision, which is accepted rather than written\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{\n\t\t\top: \"insert\",\n\t\t\tindex: 0,\n\t\t\tsource: '\\n'\n\t\t\t\t+ '\\n\\n',\n\t\t}]);\n\n\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t});\n\n\tit(\"refuses to author inline research owned by its request record\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{\n\t\t\top: \"insert\",\n\t\t\tindex: 0,\n\t\t\tsource: '\\n',\n\t\t}]);\n\n\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t\tif (outcome.ok || outcome.reason !== \"invalid\") return;\n\t\texpect(outcome.message).toContain(\"inline research\");\n\t});\n\n\t/**\n\t * A decision is what the room settled, and the record it projects has no\n\t * way to hear that the plan no longer shows it. `detach_question` exists\n\t * because removing a questionnaire had to be deliberate; a decision is less\n\t * removable than a question, not more.\n\t */\n\tit(\"refuses to delete or rewrite a decision while tidying around it\", async () => {\n\t\tlet held = await plan();\n\t\troom.insertDecision(held.document, {\n\t\t\tid: \"01K0N4TR8K7JGM4R1J7PW4R8YJ\",\n\t\t\tquote: \"First paragraph.\",\n\t\t\tby: \"ana\",\n\t\t\tat: \"2026-07-28T10:14:00Z\",\n\t\t\tnotes: [{ by: \"ana\", text: \"Tighten this.\" }],\n\t\t});\n\t\tlet at = edit.outline(held).findIndex(block => block.type === \"Decision\");\n\t\texpect(at).toBeGreaterThan(-1);\n\n\t\texpect(edit.apply(held, 1, [{ op: \"delete\", index: at }]))\n\t\t\t.toMatchObject({ ok: false, reason: \"invalid\" });\n\t\texpect(edit.apply(held, 1, [{ op: \"replace\", index: at, source: \"Gone.\\n\" }]))\n\t\t\t.toMatchObject({ ok: false, reason: \"invalid\" });\n\n\t\t// Still there, and still saying what it said.\n\t\texpect(room.project(held.document)).toContain(\"Tighten this.\");\n\t});\n\n\tit(\"protects inline research while allowing unrelated Planner edits\", async () => {\n\t\tlet held = await plan(\n\t\t\t'# Title\\n\\n\\n\\nAfter.\\n',\n\t\t);\n\t\tlet at = edit.outline(held).findIndex(block => block.type === \"Research\");\n\t\texpect(at).toBe(1);\n\n\t\tlet attempts: edit.Operation[][] = [\n\t\t\t[{ op: \"delete\", index: at }],\n\t\t\t[{ op: \"replace\", index: at, source: \"Gone.\\n\" }],\n\t\t\t[{ op: \"move\", index: at, to: 0 }],\n\t\t\t[{ op: \"replace_root\", source: \"# Replacement\\n\" }],\n\t\t];\n\t\tfor (let operations of attempts) {\n\t\t\tlet outcome = edit.apply(held, 1, operations);\n\t\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t\t\tif (!outcome.ok && outcome.reason === \"invalid\") {\n\t\t\t\texpect(outcome.message).toContain(\"inline research\");\n\t\t\t}\n\t\t}\n\n\t\texpect(edit.apply(held, 1, [{ op: \"insert\", index: 0, source: \"Context.\\n\" }]).ok)\n\t\t\t.toBe(true);\n\t\texpect(room.project(held.document)).toContain(\" {\n\t\tlet held = await plan(\n\t\t\t'\\n'\n\t\t\t\t+ '\\n'\n\t\t\t\t+ \"\\n\\nAfter.\\n\",\n\t\t);\n\t\tlet attempts: edit.Operation[][] = [\n\t\t\t[{ op: \"delete\", index: 0 }],\n\t\t\t[{ op: \"replace\", index: 0, source: \"Gone.\\n\" }],\n\t\t\t[{ op: \"move\", index: 0, to: 1 }],\n\t\t\t[{ op: \"replace_root\", source: \"# Replacement\\n\" }],\n\t\t];\n\n\t\tfor (let operations of attempts) {\n\t\t\tlet outcome = edit.apply(held, 1, operations);\n\t\t\texpect(outcome).toMatchObject({ ok: false, reason: \"invalid\" });\n\t\t\tif (!outcome.ok && outcome.reason === \"invalid\") {\n\t\t\t\texpect(outcome.message).toContain(\"inline research\");\n\t\t\t}\n\t\t}\n\t});\n\n\tit(\"refuses an index the plan does not have\", () => {\n\t\texpect(edit.apply(subject, 1, [{ op: \"delete\", index: 9 }]))\n\t\t\t.toMatchObject({ ok: false, reason: \"invalid\" });\n\t});\n});\n\ndescribe(\"reconciliation\", () => {\n\t/**\n\t * The reason an edit is reconciled rather than replacing the document:\n\t * blocks the agent did not touch keep their identity, so anyone editing\n\t * alongside it keeps their cursor, their selection and their undo history.\n\t */\n\tit(\"leaves untouched blocks with the identity they had\", () => {\n\t\tlet keys = () => {\n\t\t\tlet out: string[] = [];\n\t\t\tsubject.document.editor.getEditorState().read(() => {\n\t\t\t\t// eslint-disable-next-line\n\t\t\t\tout = [...subject.document.editor.getEditorState()._nodeMap.keys()];\n\t\t\t});\n\t\t\treturn out;\n\t\t};\n\n\t\tlet before = keys();\n\t\texpect(edit.apply(subject, 1, [{ op: \"replace\", index: 2, source: \"Rewritten.\\n\" }]).ok)\n\t\t\t.toBe(true);\n\t\tlet after = keys();\n\n\t\t// The heading and first paragraph survive; only the replaced block and\n\t\t// the root differ.\n\t\tlet survived = before.filter(key => after.includes(key));\n\t\texpect(survived.length).toBeGreaterThan(3);\n\t});\n\n\tit(\"produces a delta to relay, not a whole document\", () => {\n\t\tlet outcome = edit.apply(subject, 1, [{ op: \"insert\", index: 0, source: \"Added.\\n\" }]);\n\n\t\texpect(outcome.ok).toBe(true);\n\t\tif (!outcome.ok) return;\n\t\texpect(outcome.mutation).toBeDefined();\n\t\texpect(outcome.mutation!.source).toContain(\"Added.\");\n\t});\n});\n\n/**\n * What a batch did, so a reader can be shown where.\n *\n * The two halves are derived differently on purpose, and the difference is\n * what these pin: identity answers what was written, and cannot be fooled;\n * the operations answer what moved or went, which identity cannot tell apart\n * from a block merely pushed down by an insert above it.\n */\ndescribe(\"reporting what a batch did\", () => {\n\t/** Every change, in the order the reader will meet them. */\n\tfunction changes(outcome: edit.Result): edit.Change[] {\n\t\texpect(outcome.ok).toBe(true);\n\t\treturn outcome.ok ? outcome.changes : [];\n\t}\n\n\tit(\"reports a block it wrote, with enough of it to recognise\", () => {\n\t\tlet found = changes(\n\t\t\tedit.apply(subject, 1, [{ op: \"insert\", index: 0, source: \"Inserted.\\n\" }]),\n\t\t);\n\n\t\texpect(found).toEqual([\n\t\t\t{ kind: \"added\", index: 1, type: \"paragraph\", preview: \"Inserted.\" },\n\t\t]);\n\t});\n\n\t/**\n\t * The case index comparison gets wrong. Everything below an insert shifts\n\t * down by one, and a diff that read position as movement would light up\n\t * the whole document for an edit that touched one block.\n\t */\n\tit(\"does not report blocks an insert pushed down as having moved\", () => {\n\t\tlet found = changes(\n\t\t\tedit.apply(subject, 1, [{ op: \"insert\", index: 0, source: \"Inserted.\\n\" }]),\n\t\t);\n\n\t\texpect(found.filter(change => change.kind === \"moved\")).toEqual([]);\n\t});\n\n\tit(\"reports a rewrite as what it wrote, and leaves no hole\", () => {\n\t\tlet found = changes(\n\t\t\tedit.apply(subject, 1, [{ op: \"replace\", index: 1, source: \"Rewritten.\\n\" }]),\n\t\t);\n\n\t\texpect(found).toEqual([\n\t\t\t{ kind: \"added\", index: 1, type: \"paragraph\", preview: \"Rewritten.\" },\n\t\t]);\n\t});\n\n\tit(\"names the hole a deletion left by the block that followed it\", () => {\n\t\tlet found = changes(edit.apply(subject, 1, [{ op: \"delete\", index: 1 }]));\n\n\t\texpect(found).toEqual([\n\t\t\t{\n\t\t\t\tkind: \"removed\",\n\t\t\t\tat: { index: 1, side: \"before\" },\n\t\t\t\tblocks: [{ type: \"paragraph\", preview: \"First paragraph.\" }],\n\t\t\t},\n\t\t]);\n\t});\n\n\tit(\"names a hole at the end by the block before it\", () => {\n\t\tlet found = changes(edit.apply(subject, 1, [{ op: \"delete\", index: 2 }]));\n\n\t\texpect(found).toEqual([\n\t\t\t{\n\t\t\t\tkind: \"removed\",\n\t\t\t\tat: { index: 1, side: \"after\" },\n\t\t\t\tblocks: [{ type: \"paragraph\", preview: \"Second paragraph.\" }],\n\t\t\t},\n\t\t]);\n\t});\n\n\t/** Three blocks deleted in a row is one hole in the prose, not three. */\n\tit(\"collapses deletions that left the same space into one hole\", () => {\n\t\tlet found = changes(\n\t\t\tedit.apply(subject, 1, [{ op: \"delete\", index: 1 }, { op: \"delete\", index: 2 }]),\n\t\t);\n\n\t\texpect(found).toEqual([\n\t\t\t{\n\t\t\t\tkind: \"removed\",\n\t\t\t\tat: { index: 0, side: \"after\" },\n\t\t\t\tblocks: [\n\t\t\t\t\t{ type: \"paragraph\", preview: \"First paragraph.\" },\n\t\t\t\t\t{ type: \"paragraph\", preview: \"Second paragraph.\" },\n\t\t\t\t],\n\t\t\t},\n\t\t]);\n\t});\n\n\tit(\"reports a move as one change, at both ends\", () => {\n\t\tlet found = changes(edit.apply(subject, 1, [{ op: \"move\", index: 0, to: 2 }]));\n\n\t\texpect(found).toEqual([\n\t\t\t{\n\t\t\t\tkind: \"moved\",\n\t\t\t\tindex: 2,\n\t\t\t\tfrom: { index: 0, side: \"before\" },\n\t\t\t\ttype: \"heading\",\n\t\t\t\tpreview: \"Title\",\n\t\t\t},\n\t\t]);\n\t});\n\n\tit(\"reports nothing for a move that goes nowhere\", () => {\n\t\texpect(changes(edit.apply(subject, 1, [{ op: \"move\", index: 1, to: 1 }]))).toEqual([]);\n\t});\n\n\t/**\n\t * The exclusion that stops a hole pointing at the wrong prose.\n\t *\n\t * The deleted paragraph sat between the heading and the block after it,\n\t * and that block is the one this batch sends to the top. Naming the hole\n\t * by it would put the mark above the whole document, nowhere near where\n\t * the content was, so the search has to pass over anything that vacated\n\t * and settle on the heading instead.\n\t */\n\tit(\"does not name a hole by a block that has itself gone elsewhere\", () => {\n\t\tlet found = changes(\n\t\t\tedit.apply(subject, 1, [{ op: \"delete\", index: 1 }, { op: \"move\", index: 2, to: 0 }]),\n\t\t);\n\n\t\texpect(room.project(subject.document)).toBe(\"Second paragraph.\\n\\n# Title\\n\");\n\t\t// The heading, which ended up last — not the paragraph now at the top.\n\t\texpect(found.find(change => change.kind === \"removed\"))\n\t\t\t.toMatchObject({ at: { index: 1, side: \"after\" } });\n\t});\n\n\t/** A document marked from end to end says nothing at all. */\n\tit(\"reports nothing when the whole plan was replaced\", () => {\n\t\texpect(changes(edit.apply(subject, 1, [{ op: \"replace_root\", source: \"# New\\n\" }])))\n\t\t\t.toEqual([]);\n\t});\n\n\tit(\"reads in document order\", () => {\n\t\tlet found = changes(\n\t\t\tedit.apply(subject, 1, [\n\t\t\t\t{ op: \"insert\", index: 2, source: \"Last.\\n\" },\n\t\t\t\t{ op: \"insert\", index: 0, source: \"Early.\\n\" },\n\t\t\t]),\n\t\t);\n\n\t\texpect(found.map(change => change.kind === \"removed\" ? change.at.index : change.index))\n\t\t\t.toEqual([1, 4]);\n\t});\n});\n\ndescribe(\"replacing canonical source\", () => {\n\tit(\"validates changed diagrams but carries unchanged malformed ones\", async () => {\n\t\tlet held = await plan(`# Title\\n\\n${MALFORMED_DIAGRAM}\\nSurrounding prose.\\n`);\n\t\tlet current = edit.source(held);\n\t\texpect(edit.replace(held, 1, current.replace(\"Surrounding\", \"Revised\")).ok).toBe(true);\n\t\tlet before = edit.source(held);\n\t\tlet invalid = edit.replace(held, 1, `${before}\\n${MALFORMED_DIAGRAM}`);\n\t\texpect(invalid).toMatchObject({ ok: false, reason: \"invalid\" });\n\t\texpect(edit.source(held)).toBe(before);\n\t\texpect(edit.replace(held, 1, `${before}\\n${DIAGRAM}`).ok).toBe(true);\n\t});\n\n\tit(\"rewrites prose while keeping unchanged block identity\", () => {\n\t\tlet keys = () => {\n\t\t\tlet out: string[] = [];\n\t\t\tsubject.document.editor.getEditorState().read(() => {\n\t\t\t\tout = [...subject.document.editor.getEditorState()._nodeMap.keys()];\n\t\t\t});\n\t\t\treturn out;\n\t\t};\n\t\tlet before = keys();\n\t\tlet outcome = edit.replace(subject, 1, \"# Title\\n\\nFirst paragraph.\\n\\nRewritten.\\n\");\n\t\texpect(outcome.ok).toBe(true);\n\t\tif (!outcome.ok) return;\n\t\texpect(room.project(subject.document)).toContain(\"Rewritten.\");\n\t\texpect(outcome.changes).toEqual([\n\t\t\t{ kind: \"added\", index: 2, type: \"paragraph\", preview: \"Rewritten.\" },\n\t\t]);\n\t\tlet survived = before.filter(key => keys().includes(key));\n\t\texpect(survived.length).toBeGreaterThan(3);\n\t});\n\n\t/** A stored link the newer URL rules refuse stays; a new one is not let in. */\n\tit(\"lets the Planner edit around a stored link only the newer URL rules refuse\", async () => {\n\t\tlet stored = \"# Title\\n\\nRead [the notes](docs\\\\notes.md).\\n\";\n\t\tlet held = await plan(stored);\n\t\tlet current = room.project(held.document);\n\n\t\texpect(edit.replace(held, 1, `${current}\\nAdded.\\n`).ok).toBe(true);\n\t\tlet next = room.project(held.document);\n\t\texpect(edit.replace(held, 1, `${next}\\nSee [this](//evil.com).\\n`))\n\t\t\t.toMatchObject({ ok: false, reason: \"invalid\" });\n\t\texpect(edit.replace(held, 1, `${next}\\nSee [this](https://example.com).\\n`).ok).toBe(true);\n\t});\n\n\tit(\"refuses dropping or forging a decision projection\", async () => {\n\t\tlet held = await plan();\n\t\troom.insertDecision(held.document, {\n\t\t\tid: \"01K0N4TR8K7JGM4R1J7PW4R8YJ\",\n\t\t\tquote: \"First paragraph.\",\n\t\t\tby: \"ana\",\n\t\t\tat: \"2026-07-28T10:14:00Z\",\n\t\t\tnotes: [{ by: \"ana\", text: \"Tighten this.\" }],\n\t\t});\n\t\tlet current = room.project(held.document);\n\t\texpect(edit.replace(held, 1, \"# Title\\n\\nFirst paragraph.\\n\\nSecond paragraph.\\n\"))\n\t\t\t.toMatchObject({ ok: false, reason: \"invalid\" });\n\t\texpect(edit.replace(\n\t\t\theld,\n\t\t\t1,\n\t\t\t`${current}\\n\\n\\n`\n\t\t\t\t+ `\\n\\n`,\n\t\t)).toMatchObject({\n\t\t\tok: false,\n\t\t\treason: \"invalid\",\n\t\t});\n\t\texpect(room.project(held.document)).toBe(current);\n\t});\n\n\tit(\"keeps an unchanged decision while rewriting surrounding prose\", async () => {\n\t\tlet held = await plan();\n\t\troom.insertDecision(held.document, {\n\t\t\tid: \"01K0N4TR8K7JGM4R1J7PW4R8YJ\",\n\t\t\tquote: \"First paragraph.\",\n\t\t\tby: \"ana\",\n\t\t\tat: \"2026-07-28T10:14:00Z\",\n\t\t\tnotes: [{ by: \"ana\", text: \"Tighten this.\" }],\n\t\t});\n\t\tlet current = room.project(held.document);\n\t\tlet next = current.replace(\"First paragraph.\", \"Updated first paragraph.\");\n\t\tlet outcome = edit.replace(held, 1, next);\n\t\texpect(outcome.ok).toBe(true);\n\t\texpect(room.project(held.document)).toContain(\"Updated first paragraph.\");\n\t\texpect(room.project(held.document)).toContain(\"Tighten this.\");\n\t});\n\n\tit(\"preserves questionnaire answers and nested research projections\", async () => {\n\t\tlet projections = [\n\t\t\t`\n\n\n\n`,\n\t\t\t`\n\n`,\n\t\t];\n\t\tfor (let projection of projections) {\n\t\t\tlet held = await plan(`# Title\\n\\n${projection}\\n\\nAfter.\\n`);\n\t\t\tlet current = room.project(held.document);\n\t\t\tfor (\n\t\t\t\tlet next of [\n\t\t\t\t\t\"# Title\\n\\nAfter.\\n\",\n\t\t\t\t\tcurrent.replace(\"01K0N4TR8K7JGM4R1J7PW4R8YJ\", \"01K0N4TR8K7JGM4R1J7PW4R8YM\"),\n\t\t\t\t]\n\t\t\t) {\n\t\t\t\texpect(edit.replace(held, 1, next)).toMatchObject({ ok: false, reason: \"invalid\" });\n\t\t\t\texpect(room.project(held.document)).toBe(current);\n\t\t\t}\n\t\t\tif (current.includes(\"Settled\")) {\n\t\t\t\texpect(edit.replace(held, 1, current.replace(\"Settled\", \"Changed\")))\n\t\t\t\t\t.toMatchObject({ ok: false, reason: \"invalid\" });\n\t\t\t}\n\t\t\texpect(edit.replace(subject, 1, `${SOURCE}\\n${projection}\\n`))\n\t\t\t\t.toMatchObject({ ok: false, reason: \"invalid\" });\n\t\t\texpect(edit.replace(held, 1, current.replace(\"After.\", \"Revised prose.\")).ok).toBe(true);\n\t\t\texpect(room.project(held.document)).toContain(\"Revised prose.\");\n\t\t}\n\t});\n\n\tit(\"leaves identical source and duplicate blocks untouched\", async () => {\n\t\tlet held = await plan(\"# Title\\n\\nSame paragraph.\\n\\nSame paragraph.\\n\");\n\t\tlet current = room.project(held.document);\n\t\tlet result = edit.replace(held, 1, current);\n\t\texpect(result).toMatchObject({ ok: true, mutation: undefined, touched: [], changes: [] 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