{ "usage": "Owned AI-generated illustrative HVAC scenes; no actual Australian facilities providers or instructions", "sourceProject": "D:/dev/.USA/62_?곸뾽?⑹뿉?덉?쨌?쒖꽕愿€由?commercial HVAC maintenance costs", "sourceBrief": { "site": "USA-62", "brand": "Plant Ledger", "locale": "en-US", "artDirection": { "mood": "Quiet, precise American industrial architecture and facilities editorial photography", "palette": "forest green, galvanized silver, warm ivory, restrained rust orange", "light": "Soft natural overcast daylight or believable diffused workshop light", "materials": "US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment", "avoid": "Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes" }, "images": [ { "id": "hero", "slot": "/media/hero.svg", "use": "Home page hero (largest, first impression)", "topic": "Commercial HVAC maintenance costs and facility planning", "alt": "Packaged commercial HVAC units on a low-rise building roof", "scene": "A low oblique view across a non-identifiable American commercial roof with two packaged HVAC units, galvanized housings, coil grilles and orderly conduit against a pale overcast sky. The centered units remain fully visible in a wide crop.", "status": "done" }, { "id": "cat-cost-planning", "slot": "/media/cat-cost-planning.svg", "use": "Category card + category page: Cost planning", "topic": "Cost planning ??Understand the scope behind the number: equipment, access, labor, exclusions and annual budgets.", "alt": "Small rooftop equipment model beside blank planning paper", "scene": "A clean industrial planning bench with a small unbranded rooftop HVAC model, a blank gridded sheet and a metal measuring rule. Overhead composition with warm ivory paper and dark green edge details.", "status": "done" }, { "id": "cat-procurement", "slot": "/media/cat-procurement.svg", "use": "Category card + category page: Quotes \u0026 decisions", "topic": "Quotes \u0026 decisions ??Build a comparable bid package, test the arithmetic and make maintenance decisions with a clear record.", "alt": "Blank service binders and a clipboard in a plant office", "scene": "Two closed blank service binders with different rust and green cloth spines beside an unmarked metal clipboard in a commercial plant office. Side-on still life, no writing anywhere.", "status": "done" }, { "id": "cat-field-notes", "slot": "/media/cat-field-notes.svg", "use": "Category card + category page: Field notes \u0026 sources", "topic": "Field notes \u0026 sources ??Trace recurring failures, improve service records and find the official requirements that apply to your equipment.", "alt": "Ductwork and insulated piping in a commercial mechanical room", "scene": "Close architectural view down a neat commercial mechanical-room aisle with galvanized ductwork, insulated pipes and green structural details. No labels or screens, no people.", "status": "done" }, { "id": "tool-annual-maintenance-budget", "slot": "/media/tool-annual-maintenance-budget.svg", "use": "Tool card: Annual maintenance budget", "topic": "Annual maintenance budget ??Turn your own per-unit annual quotes into a low and high planning allowance. Defaults are illustrative, not market rates.", "alt": "Six metal components arranged on a maintenance planning bench", "scene": "An orderly row of six small unbranded metal equipment components on an ivory maintenance bench beside a blank calculator with no keys or display visible. Overhead editorial still life.", "status": "done" }, { "id": "tool-maintenance-improvement-payback", "slot": "/media/tool-maintenance-improvement-payback.svg", "use": "Tool card: Maintenance improvement payback", "topic": "Maintenance improvement payback ??Test a proposed controls or maintenance improvement against a measured annual net saving. No savings percentage is assumed.", "alt": "Unbranded damper actuator and cable on a workshop mat", "scene": "A single unbranded HVAC damper actuator and a neatly coiled cable on a dark green workshop mat. Soft side light and careful technical still-life composition.", "status": "done" }, { "id": "tool-bid-scope-checklist", "slot": "/media/tool-bid-scope-checklist.svg", "use": "Tool card: Service bid scope checklist", "topic": "Service bid scope checklist ??A local, resettable checklist for the records, exclusions and acceptance terms to settle before signing.", "alt": "Unmarked maintenance logbook with colored index tabs", "scene": "A closed unmarked maintenance logbook with blank colored index tabs and a plain pencil on a galvanized workbench. No readable writing or numbers.", "status": "done" }, { "id": "guide-annual-budget-worked-example", "slot": "/media/guide-annual-budget-worked-example.svg", "use": "Article cover: Annual HVAC maintenance budget: a worked six-unit example", "topic": "Annual HVAC maintenance budget: a worked six-unit example", "alt": "Six ventilation fittings grouped beside a closed ledger", "scene": "Six unbranded small metal ventilation fittings arranged in two neat groups on a pale workshop surface. A closed green ledger sits to one side without visible writing.", "status": "done" }, { "id": "guide-coil-cleaning-scope", "slot": "/media/guide-coil-cleaning-scope.svg", "use": "Article cover: Coil cleaning quotes: define the task before adding the allowance", "topic": "Coil cleaning quotes: define the task before adding the allowance", "alt": "Close view of HVAC coil fins in a galvanized frame", "scene": "Macro architectural photograph of realistic commercial HVAC coil fins in a galvanized frame, subtle natural dust on one edge, physically precise regular fins, no brands.", "status": "done" }, { "id": "guide-commercial-hvac-maintenance-costs", "slot": "/media/guide-commercial-hvac-maintenance-costs.svg", "use": "Article cover: Commercial HVAC maintenance costs: build a defensible annual budget", "topic": "Commercial HVAC maintenance costs: build a defensible annual budget", "alt": "Packaged rooftop HVAC unit above a commercial warehouse", "scene": "Wide rooftop view of one packaged commercial HVAC unit with distant low-rise anonymous warehouse roofs under soft morning light. Foreground metal roof seam leads toward the centered unit.", "status": "done" }, { "id": "guide-compare-service-bids", "slot": "/media/guide-compare-service-bids.svg", "use": "Article cover: How to compare commercial HVAC service bids on equal terms", "topic": "How to compare commercial HVAC service bids on equal terms", "alt": "Three blank proposal folders beside a metal grille sample", "scene": "Three unmarked differently colored closed proposal folders aligned on a commercial facilities desk beside a small metal HVAC grille sample. Overhead view, no writing or numbers.", "status": "done" }, { "id": "guide-contract-handover", "slot": "/media/guide-contract-handover.svg", "use": "Article cover: HVAC contractor handover: preserve the asset history", "topic": "HVAC contractor handover: preserve the asset history", "alt": "Keys and an unmarked equipment manual on a plant-office desk", "scene": "A plain metal key ring beside a closed unmarked equipment manual and a neatly wound cable on a green plant-office desk. Quiet top-down still life, no visible writing.", "status": "done" }, { "id": "guide-controls-schedules", "slot": "/media/guide-controls-schedules.svg", "use": "Article cover: HVAC schedules and overrides: a low-drama operating review", "topic": "HVAC schedules and overrides: a low-drama operating review", "alt": "Closed building controls cabinet beside orderly conduit", "scene": "An unbranded closed building controls cabinet mounted beside neat conduit in a commercial corridor, no visible screen, no writing, diffused daylight.", "status": "done" }, { "id": "guide-cost-drivers", "slot": "/media/guide-cost-drivers.svg", "use": "Article cover: Why two HVAC maintenance quotes can be far apart", "topic": "Why two HVAC maintenance quotes can be far apart", "alt": "Roof access stair beside commercial HVAC equipment", "scene": "A ground-level architectural photograph of a commercial rooftop access stair and the edge of a large HVAC housing. Contrast accessible walkway surfaces with the dense machinery beyond, without people.", "status": "done" }, { "id": "guide-emergency-service-terms", "slot": "/media/guide-emergency-service-terms.svg", "use": "Article cover: Emergency HVAC service terms: response is not restoration", "topic": "Emergency HVAC service terms: response is not restoration", "alt": "Closed service tool case and gloves at a mechanical-room entrance", "scene": "A closed unbranded technician tool case and work gloves set beside the entrance to an anonymous commercial mechanical room at dusk. Empty scene, no signs or writing.", "status": "done" }, { "id": "guide-filters-and-consumables", "slot": "/media/guide-filters-and-consumables.svg", "use": "Article cover: Filters and consumables: stop double-counting the small costs", "topic": "Filters and consumables: stop double-counting the small costs", "alt": "Pleated HVAC filters and a belt on an industrial shelf", "scene": "Several clean pleated HVAC filters of different sizes standing upright on an ivory industrial shelf, with a plain belt coil nearby. No product labels or packaging writing.", "status": "done" }, { "id": "guide-improvement-payback", "slot": "/media/guide-improvement-payback.svg", "use": "Article cover: Test an HVAC improvement payback without assuming savings", "topic": "Test an HVAC improvement payback without assuming savings", "alt": "Duct-mounted actuator and orderly wiring in a plant room", "scene": "Close view of realistic commercial ventilation ductwork with a small unmarked actuator mounted externally, orderly wiring and soft forest-green shadows. No exposed moving parts or readable labels.", "status": "done" }, { "id": "guide-maintenance-frequency", "slot": "/media/guide-maintenance-frequency.svg", "use": "Article cover: How often should commercial HVAC be serviced? Start with the task", "topic": "How often should commercial HVAC be serviced? Start with the task", "alt": "Air-handling cabinet in a quiet mechanical room", "scene": "A realistic wall-mounted commercial air-handling cabinet in a quiet mechanical room, with a simple blank calendar board turned away on a nearby desk. No display or readable markings.", "status": "done" }, { "id": "guide-official-source-map", "slot": "/media/guide-official-source-map.svg", "use": "Article cover: Official HVAC maintenance sources: what each resource can answer", "topic": "Official HVAC maintenance sources: what each resource can answer", "alt": "Technical manuals and a duct fitting on a facilities reference shelf", "scene": "An orderly facilities reference shelf with blank unbranded technical manuals, a small duct fitting and a closed green document box. No writing, flags, logos or screens.", "status": "done" }, { "id": "guide-preventive-contract-coverage", "slot": "/media/guide-preventive-contract-coverage.svg", "use": "Article cover: What a commercial HVAC maintenance contract should spell out", "topic": "What a commercial HVAC maintenance contract should spell out", "alt": "Blank service folder beside a filter frame and tool pouch", "scene": "An open blank service folder beside a neatly arranged filter frame and unbranded tool pouch on a plant office counter. No writing, no logos, quiet side-lit composition.", "status": "done" }, { "id": "guide-refrigerant-rules-2026", "slot": "/media/guide-refrigerant-rules-2026.svg", "use": "Article cover: Refrigerant costs and 2026 rules: verify applicability before budgeting", "topic": "Refrigerant costs and 2026 rules: verify applicability before budgeting", "alt": "Stored refrigerant recovery equipment in a service workshop", "scene": "Unbranded refrigerant recovery equipment with closed unmarked cylinders in a tidy ventilated service workshop, hoses neatly stored and no operation in progress. No labels or gauges with readable numbers.", "status": "done" }, { "id": "guide-repair-or-replace", "slot": "/media/guide-repair-or-replace.svg", "use": "Article cover: Repair or replace commercial HVAC: organize the decision first", "topic": "Repair or replace commercial HVAC: organize the decision first", "alt": "Older and newer HVAC cabinets in a warehouse service bay", "scene": "An older weathered unbranded commercial HVAC housing in the foreground and a clean new unbranded replacement cabinet further back in a warehouse service bay. No readable labels.", "status": "done" }, { "id": "guide-repair-reserve", "slot": "/media/guide-repair-reserve.svg", "use": "Article cover: How to set an HVAC repair reserve without pretending to predict failures", "topic": "How to set an HVAC repair reserve without pretending to predict failures", "alt": "Spare mechanical and electrical components in a metal parts tray", "scene": "A small collection of unbranded spare HVAC contactors, a sealed bearing and a plain metal parts tray on a green maintenance bench. Macro editorial still life, no markings.", "status": "done" }, { "id": "guide-repeat-failures", "slot": "/media/guide-repeat-failures.svg", "use": "Article cover: Repeated HVAC callbacks: investigate the chain, not just the invoice", "topic": "Repeated HVAC callbacks: investigate the chain, not just the invoice", "alt": "Worn and new fan belts on a maintenance mat", "scene": "Close editorial photograph of a realistic worn fan belt resting beside a new belt on a maintenance mat, both unmarked and physically plausible. No people or writing.", "status": "done" }, { "id": "guide-request-for-quote", "slot": "/media/guide-request-for-quote.svg", "use": "Article cover: Write an HVAC maintenance RFQ that gets usable answers", "topic": "Write an HVAC maintenance RFQ that gets usable answers", "alt": "Blank plan roll and clipboard on an industrial drafting table", "scene": "A large blank rolled building plan, plain clipboard and mechanical equipment photograph with no identifiable details on an industrial drafting table. No writing or logos.", "status": "done" }, { "id": "guide-rooftop-unit-budget", "slot": "/media/guide-rooftop-unit-budget.svg", "use": "Article cover: Budgeting maintenance for a fleet of rooftop units", "topic": "Budgeting maintenance for a fleet of rooftop units", "alt": "Four HVAC units arranged across a commercial roof", "scene": "Elevated oblique view of a row of four distinct realistic rooftop HVAC units on a broad anonymous US commercial roof. Repeating galvanized housings and tidy service paths, no writing.", "status": "done" }, { "id": "guide-service-records", "slot": "/media/guide-service-records.svg", "use": "Article cover: HVAC service records that support the next decision", "topic": "HVAC service records that support the next decision", "alt": "Indexed maintenance binders on a metal office shelf", "scene": "A row of blank indexed maintenance binders and a plain closed tablet with its screen facing down on a metal office shelf. Natural side light, warm ivory and forest green tones.", "status": "done" } ] }, "sourceWorksheet": "# Image worksheet ??USA-62 Plant Ledger (en-US)\n\nGenerated from `images/brief.json` ??edit that file, not this one, then run `node D:/C_Drive_Data/dev/control-tower/site-kit/images.mjs brief USA-62`.\nHow to work through it: `D:/C_Drive_Data/dev/control-tower/site-kit/CODEX-IMAGES.md`.\n\n**0 of 27 images pending.** Each image must be a separate generation (no crops or recolours of another image).\nSave each result as `images/src/\u003cid\u003e.png` (exact id below), then run `node D:/C_Drive_Data/dev/control-tower/site-kit/images.mjs install USA-62`.\n\n## Art direction (shared by every image of this site)\n- Mood: Quiet, precise American industrial architecture and facilities editorial photography\n- Palette: forest green, galvanized silver, warm ivory, restrained rust orange\n- Light: Soft natural overcast daylight or believable diffused workshop light\n- Materials / setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment\n- Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes\n\n## 1. `hero` ??DONE\n- Used as: Home page hero (largest, first impression)\n- Save as: `images/src/hero.png`\n- Alt text (already set, en-US): Packaged commercial HVAC units on a low-rise building roof\n\n```text\nA low oblique view across a non-identifiable American commercial roof with two packaged HVAC units, galvanized housings, coil grilles and orderly conduit against a pale overcast sky. The centered units remain fully visible in a wide crop. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 2. `cat-cost-planning` ??DONE\n- Used as: Category card + category page: Cost planning\n- Save as: `images/src/cat-cost-planning.png`\n- Alt text (already set, en-US): Small rooftop equipment model beside blank planning paper\n\n```text\nA clean industrial planning bench with a small unbranded rooftop HVAC model, a blank gridded sheet and a metal measuring rule. Overhead composition with warm ivory paper and dark green edge details. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 3. `cat-procurement` ??DONE\n- Used as: Category card + category page: Quotes \u0026 decisions\n- Save as: `images/src/cat-procurement.png`\n- Alt text (already set, en-US): Blank service binders and a clipboard in a plant office\n\n```text\nTwo closed blank service binders with different rust and green cloth spines beside an unmarked metal clipboard in a commercial plant office. Side-on still life, no writing anywhere. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 4. `cat-field-notes` ??DONE\n- Used as: Category card + category page: Field notes \u0026 sources\n- Save as: `images/src/cat-field-notes.png`\n- Alt text (already set, en-US): Ductwork and insulated piping in a commercial mechanical room\n\n```text\nClose architectural view down a neat commercial mechanical-room aisle with galvanized ductwork, insulated pipes and green structural details. No labels or screens, no people. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 5. `tool-annual-maintenance-budget` ??DONE\n- Used as: Tool card: Annual maintenance budget\n- Save as: `images/src/tool-annual-maintenance-budget.png`\n- Alt text (already set, en-US): Six metal components arranged on a maintenance planning bench\n\n```text\nAn orderly row of six small unbranded metal equipment components on an ivory maintenance bench beside a blank calculator with no keys or display visible. Overhead editorial still life. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 6. `tool-maintenance-improvement-payback` ??DONE\n- Used as: Tool card: Maintenance improvement payback\n- Save as: `images/src/tool-maintenance-improvement-payback.png`\n- Alt text (already set, en-US): Unbranded damper actuator and cable on a workshop mat\n\n```text\nA single unbranded HVAC damper actuator and a neatly coiled cable on a dark green workshop mat. Soft side light and careful technical still-life composition. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 7. `tool-bid-scope-checklist` ??DONE\n- Used as: Tool card: Service bid scope checklist\n- Save as: `images/src/tool-bid-scope-checklist.png`\n- Alt text (already set, en-US): Unmarked maintenance logbook with colored index tabs\n\n```text\nA closed unmarked maintenance logbook with blank colored index tabs and a plain pencil on a galvanized workbench. No readable writing or numbers. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 8. `guide-annual-budget-worked-example` ??DONE\n- Used as: Article cover: Annual HVAC maintenance budget: a worked six-unit example\n- Save as: `images/src/guide-annual-budget-worked-example.png`\n- Alt text (already set, en-US): Six ventilation fittings grouped beside a closed ledger\n\n```text\nSix unbranded small metal ventilation fittings arranged in two neat groups on a pale workshop surface. A closed green ledger sits to one side without visible writing. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 9. `guide-coil-cleaning-scope` ??DONE\n- Used as: Article cover: Coil cleaning quotes: define the task before adding the allowance\n- Save as: `images/src/guide-coil-cleaning-scope.png`\n- Alt text (already set, en-US): Close view of HVAC coil fins in a galvanized frame\n\n```text\nMacro architectural photograph of realistic commercial HVAC coil fins in a galvanized frame, subtle natural dust on one edge, physically precise regular fins, no brands. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 10. `guide-commercial-hvac-maintenance-costs` ??DONE\n- Used as: Article cover: Commercial HVAC maintenance costs: build a defensible annual budget\n- Save as: `images/src/guide-commercial-hvac-maintenance-costs.png`\n- Alt text (already set, en-US): Packaged rooftop HVAC unit above a commercial warehouse\n\n```text\nWide rooftop view of one packaged commercial HVAC unit with distant low-rise anonymous warehouse roofs under soft morning light. Foreground metal roof seam leads toward the centered unit. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 11. `guide-compare-service-bids` ??DONE\n- Used as: Article cover: How to compare commercial HVAC service bids on equal terms\n- Save as: `images/src/guide-compare-service-bids.png`\n- Alt text (already set, en-US): Three blank proposal folders beside a metal grille sample\n\n```text\nThree unmarked differently colored closed proposal folders aligned on a commercial facilities desk beside a small metal HVAC grille sample. Overhead view, no writing or numbers. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 12. `guide-contract-handover` ??DONE\n- Used as: Article cover: HVAC contractor handover: preserve the asset history\n- Save as: `images/src/guide-contract-handover.png`\n- Alt text (already set, en-US): Keys and an unmarked equipment manual on a plant-office desk\n\n```text\nA plain metal key ring beside a closed unmarked equipment manual and a neatly wound cable on a green plant-office desk. Quiet top-down still life, no visible writing. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 13. `guide-controls-schedules` ??DONE\n- Used as: Article cover: HVAC schedules and overrides: a low-drama operating review\n- Save as: `images/src/guide-controls-schedules.png`\n- Alt text (already set, en-US): Closed building controls cabinet beside orderly conduit\n\n```text\nAn unbranded closed building controls cabinet mounted beside neat conduit in a commercial corridor, no visible screen, no writing, diffused daylight. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 14. `guide-cost-drivers` ??DONE\n- Used as: Article cover: Why two HVAC maintenance quotes can be far apart\n- Save as: `images/src/guide-cost-drivers.png`\n- Alt text (already set, en-US): Roof access stair beside commercial HVAC equipment\n\n```text\nA ground-level architectural photograph of a commercial rooftop access stair and the edge of a large HVAC housing. Contrast accessible walkway surfaces with the dense machinery beyond, without people. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 15. `guide-emergency-service-terms` ??DONE\n- Used as: Article cover: Emergency HVAC service terms: response is not restoration\n- Save as: `images/src/guide-emergency-service-terms.png`\n- Alt text (already set, en-US): Closed service tool case and gloves at a mechanical-room entrance\n\n```text\nA closed unbranded technician tool case and work gloves set beside the entrance to an anonymous commercial mechanical room at dusk. Empty scene, no signs or writing. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 16. `guide-filters-and-consumables` ??DONE\n- Used as: Article cover: Filters and consumables: stop double-counting the small costs\n- Save as: `images/src/guide-filters-and-consumables.png`\n- Alt text (already set, en-US): Pleated HVAC filters and a belt on an industrial shelf\n\n```text\nSeveral clean pleated HVAC filters of different sizes standing upright on an ivory industrial shelf, with a plain belt coil nearby. No product labels or packaging writing. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 17. `guide-improvement-payback` ??DONE\n- Used as: Article cover: Test an HVAC improvement payback without assuming savings\n- Save as: `images/src/guide-improvement-payback.png`\n- Alt text (already set, en-US): Duct-mounted actuator and orderly wiring in a plant room\n\n```text\nClose view of realistic commercial ventilation ductwork with a small unmarked actuator mounted externally, orderly wiring and soft forest-green shadows. No exposed moving parts or readable labels. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 18. `guide-maintenance-frequency` ??DONE\n- Used as: Article cover: How often should commercial HVAC be serviced? Start with the task\n- Save as: `images/src/guide-maintenance-frequency.png`\n- Alt text (already set, en-US): Air-handling cabinet in a quiet mechanical room\n\n```text\nA realistic wall-mounted commercial air-handling cabinet in a quiet mechanical room, with a simple blank calendar board turned away on a nearby desk. No display or readable markings. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 19. `guide-official-source-map` ??DONE\n- Used as: Article cover: Official HVAC maintenance sources: what each resource can answer\n- Save as: `images/src/guide-official-source-map.png`\n- Alt text (already set, en-US): Technical manuals and a duct fitting on a facilities reference shelf\n\n```text\nAn orderly facilities reference shelf with blank unbranded technical manuals, a small duct fitting and a closed green document box. No writing, flags, logos or screens. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 20. `guide-preventive-contract-coverage` ??DONE\n- Used as: Article cover: What a commercial HVAC maintenance contract should spell out\n- Save as: `images/src/guide-preventive-contract-coverage.png`\n- Alt text (already set, en-US): Blank service folder beside a filter frame and tool pouch\n\n```text\nAn open blank service folder beside a neatly arranged filter frame and unbranded tool pouch on a plant office counter. No writing, no logos, quiet side-lit composition. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 21. `guide-refrigerant-rules-2026` ??DONE\n- Used as: Article cover: Refrigerant costs and 2026 rules: verify applicability before budgeting\n- Save as: `images/src/guide-refrigerant-rules-2026.png`\n- Alt text (already set, en-US): Stored refrigerant recovery equipment in a service workshop\n\n```text\nUnbranded refrigerant recovery equipment with closed unmarked cylinders in a tidy ventilated service workshop, hoses neatly stored and no operation in progress. No labels or gauges with readable numbers. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 22. `guide-repair-or-replace` ??DONE\n- Used as: Article cover: Repair or replace commercial HVAC: organize the decision first\n- Save as: `images/src/guide-repair-or-replace.png`\n- Alt text (already set, en-US): Older and newer HVAC cabinets in a warehouse service bay\n\n```text\nAn older weathered unbranded commercial HVAC housing in the foreground and a clean new unbranded replacement cabinet further back in a warehouse service bay. No readable labels. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 23. `guide-repair-reserve` ??DONE\n- Used as: Article cover: How to set an HVAC repair reserve without pretending to predict failures\n- Save as: `images/src/guide-repair-reserve.png`\n- Alt text (already set, en-US): Spare mechanical and electrical components in a metal parts tray\n\n```text\nA small collection of unbranded spare HVAC contactors, a sealed bearing and a plain metal parts tray on a green maintenance bench. Macro editorial still life, no markings. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 24. `guide-repeat-failures` ??DONE\n- Used as: Article cover: Repeated HVAC callbacks: investigate the chain, not just the invoice\n- Save as: `images/src/guide-repeat-failures.png`\n- Alt text (already set, en-US): Worn and new fan belts on a maintenance mat\n\n```text\nClose editorial photograph of a realistic worn fan belt resting beside a new belt on a maintenance mat, both unmarked and physically plausible. No people or writing. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 25. `guide-request-for-quote` ??DONE\n- Used as: Article cover: Write an HVAC maintenance RFQ that gets usable answers\n- Save as: `images/src/guide-request-for-quote.png`\n- Alt text (already set, en-US): Blank plan roll and clipboard on an industrial drafting table\n\n```text\nA large blank rolled building plan, plain clipboard and mechanical equipment photograph with no identifiable details on an industrial drafting table. No writing or logos. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 26. `guide-rooftop-unit-budget` ??DONE\n- Used as: Article cover: Budgeting maintenance for a fleet of rooftop units\n- Save as: `images/src/guide-rooftop-unit-budget.png`\n- Alt text (already set, en-US): Four HVAC units arranged across a commercial roof\n\n```text\nElevated oblique view of a row of four distinct realistic rooftop HVAC units on a broad anonymous US commercial roof. Repeating galvanized housings and tidy service paths, no writing. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n\n## 27. `guide-service-records` ??DONE\n- Used as: Article cover: HVAC service records that support the next decision\n- Save as: `images/src/guide-service-records.png`\n- Alt text (already set, en-US): Indexed maintenance binders on a metal office shelf\n\n```text\nA row of blank indexed maintenance binders and a plain closed tablet with its screen facing down on a metal office shelf. Natural side light, warm ivory and forest green tones. Mood: Quiet, precise American industrial architecture and facilities editorial photography. Colour palette: forest green, galvanized silver, warm ivory, restrained rust orange. Light: Soft natural overcast daylight or believable diffused workshop light. Materials and setting: US low-rise commercial rooftops, sheet metal, conduits, workbenches, blank service binders and unbranded equipment. Avoid: Readable text, logos, identifiable people or buildings, decorative gadgets, fake charts, unsafe work scenes. Photorealistic, high-end editorial photography, 3:2 landscape frame with the main subject centred and calm margins above and below (it is cropped to 16:9 and to 4:3 on mobile). Physically plausible light and materials, sharp detail, no AI artefacts. Absolutely no text, letters, numbers, logos, brand names, watermarks, signs, readable documents or screens, and no identifiable real people, celebrities, buildings or branded products. People may appear only as anonymous, natural, non-posed figures (hands, back or side view, or out of focus).\n```\n", "licenses": { "site": "USA-62", "method": "27 separate built-in image_gen generations; no third-party stock photographs used", "usage": "Illustrative AI-generated assets, not evidence of actual products, inspections or locations. No third-party stock license applies; no claim of exclusive copyright is made.", "review": "All 27 images inspected in a diagnostic contact sheet. Browser crop verification remains blocked.", "assets": [ { "id": "hero", "original": "images/src/hero.png", "src": "/media/img-hero.webp", "small": "/media/img-hero-small.webp", "alt": "Packaged commercial HVAC units on a low-rise building roof", "generated": true, "promptReference": "images/BRIEF.md#hero" }, { "id": "cat-cost-planning", "original": "images/src/cat-cost-planning.png", "src": "/media/img-cat-cost-planning.webp", "small": "/media/img-cat-cost-planning-small.webp", "alt": "Small rooftop equipment model beside blank planning paper", "generated": true, "promptReference": "images/BRIEF.md#cat-cost-planning" }, { "id": "cat-procurement", "original": "images/src/cat-procurement.png", "src": "/media/img-cat-procurement.webp", "small": "/media/img-cat-procurement-small.webp", "alt": "Blank service binders and a clipboard in a plant office", "generated": true, "promptReference": "images/BRIEF.md#cat-procurement" }, { "id": "cat-field-notes", "original": "images/src/cat-field-notes.png", "src": "/media/img-cat-field-notes.webp", "small": "/media/img-cat-field-notes-small.webp", "alt": "Ductwork and insulated piping in a commercial mechanical room", "generated": true, "promptReference": "images/BRIEF.md#cat-field-notes" }, { "id": "tool-annual-maintenance-budget", "original": "images/src/tool-annual-maintenance-budget.png", "src": "/media/img-tool-annual-maintenance-budget.webp", "small": "/media/img-tool-annual-maintenance-budget-small.webp", "alt": "Six metal components arranged on a maintenance planning bench", "generated": true, "promptReference": "images/BRIEF.md#tool-annual-maintenance-budget" }, { "id": "tool-maintenance-improvement-payback", "original": "images/src/tool-maintenance-improvement-payback.png", "src": "/media/img-tool-maintenance-improvement-payback.webp", "small": "/media/img-tool-maintenance-improvement-payback-small.webp", "alt": "Unbranded damper actuator and cable on a workshop mat", "generated": true, "promptReference": "images/BRIEF.md#tool-maintenance-improvement-payback" }, { "id": "tool-bid-scope-checklist", "original": "images/src/tool-bid-scope-checklist.png", "src": "/media/img-tool-bid-scope-checklist.webp", "small": "/media/img-tool-bid-scope-checklist-small.webp", "alt": "Unmarked maintenance logbook with colored index tabs", "generated": true, "promptReference": "images/BRIEF.md#tool-bid-scope-checklist" }, { "id": "guide-annual-budget-worked-example", "original": "images/src/guide-annual-budget-worked-example.png", "src": "/media/img-guide-annual-budget-worked-example.webp", "small": "/media/img-guide-annual-budget-worked-example-small.webp", "alt": "Six ventilation fittings grouped beside a closed ledger", "generated": true, "promptReference": "images/BRIEF.md#guide-annual-budget-worked-example" }, { "id": "guide-coil-cleaning-scope", "original": "images/src/guide-coil-cleaning-scope.png", "src": "/media/img-guide-coil-cleaning-scope.webp", "small": 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