feat: AI Create Card on the dashboard

[parth0025]

Adds an "AI Create Card" button beside the existing "+ Add Card" on the dashboard. Clicking it opens a sidebar where the user types a natural-language request ("show me a pie chart of urgent open tasks for the AlianHub project"). The AI returns a fully-populated card definition, the user previews it, and on confirm the card commits via the exact same backend write path the manual modal already uses — no new dashboard routes, no schema changes.

What landed in this PR:

== Backend ==

• utils/aiPrompts.json: new prompt entry "Dashboard Card Generator" (_id 67ff000000000000aicard001). The prompt now includes:
  • USER_REQUEST / CARD_CATALOGUE / USER_CONTEXT substitution keys.
  • responseFormat: {type: "json_object"} so the model is contractually required to return parseable JSON.
  • temperature: 0.2 for deterministic output.
  • Six few-shot examples covering pie/bar charts, task list with multi-filter, assignee filter, time-tracked summary, task counts with measure/calculation/timerange, TASKLIST.fields multi-select, and QueueListComp.statusArray.
  • Per-field-type output rules (enum id vs name, multi-select arrays, project/user/status id resolution).
• Modules/AI/controller.js:
  • Fixed pre-existing outputFormat duplication bug — was appended once per matched substitution key (3x for our prompt). Now appended once after the substitution loop. Backwards-compatible.
  • Non-streaming branch now forwards optional responseFormat and temperature from the prompt entry to OpenAI. Existing prompts without these fields keep OpenAI defaults.

== Frontend ==

• frontend/src/plugins/dashboard/components/AICardSidebar.vue (new): Self-contained sidebar. Bypasses composable/aiHelper.js because the existing helper has two silent-bail bugs documented inline (companyUsers not-array TypeError + permission=null routing to projectRules). Replicates only the plan check + Swal upgrade dialog and POSTs to /api/v1/generatePrompt directly. Server-side quota tracking (limitCountUpdate) is preserved.

  Schema-aware catalogue summary in buildCatalogueSummary:

  • One indented line per configurable field with type, required flag, enum {id=name, ...} mapping for dropdowns, default value.
  • Distinguishes single-select vs multi-select (Array.isArray of default value) and emits "array of enum ids" vs "enum" so the model knows TASKLIST.fields takes [3, 4, 5] not 3.
  • Skips fields with disabled:true / hidden:true / type:"filter" so the AI doesn't try to populate them.
  • Resolves dashboardCard. via vue-i18n into a human sentence per card.

  Per-field validateField with type-specific coercion:

  • text → trimmed string capped by rules max length.
  • radio → coerced boolean.
  • dropdown w/ options → exact id → numeric coercion ("3" → 3) → name fallback ("both" → 3) → catalogue default (with $numberLong normalisation so TASKLIST.groupBy "0" comes through as 0).
  • multi-select dropdown → maps every supplied value through the coercer, de-dupes, falls back to array default.
  • projectId → resolveProjectIds (exact _id, case-insensitive name, first-project fallback).
  • AssigneeUserId → resolveMemberIds (userId, Employee_Name).
  • statusArray (QueueListComp) → resolveStatusKeys against USER_CONTEXT.statusKeys.
  • Disabled/hidden fields inherit the catalogue default unconditionally.

  Runtime context (buildUserContext): { projects, statusKeys,
  priorityKeys, members, taskTypes } so the model has the IDs it needs
  for filters and member resolution.

  Modern minimalist UI:

  • Heading + subtitle, no asterisk-on-label.
  • 10px-radius textarea with indigo focus ring.
  • Live char counter (current / 500) + dynamic helper text ("Minimum 5 characters" idle, "X more to go" warning).
  • Five quick-pick chips (workload, assignee, urgent, calendar, time-tracking) filtered against the catalogue's available cardTypes. Clicking populates the textarea.
  • dl-based preview with subtle row dividers and indigo filter tags.
  • Indigo primary / outline secondary buttons with proper disabled treatment.
  • Loading spinner with min-height so the panel doesn't collapse.
  • Responsive: <=767px → full-viewport width, 16px font (avoids iOS auto-zoom on focus), buttons stack column-reverse.

• frontend/src/plugins/dashboard/views/HomePage.vue: Mounts beside the existing AdvanceSearchModal, exposes openAiSidebar() via defineExpose alongside handleToggle, and routes the card-generated event through handleCardAddOnDashboard so the AI path lands on the same backend write as the manual modal.

• frontend/src/plugins/dashboard/views/Home.vue: New "AI Create Card" button beside "+ Add Card", gated by selectedCompany.planFeature.aiPermission so users on plans without AI never see the entry point.

• frontend/src/locales/en.js: New AICard.* section (button label, sidebar copy, helper text, chip labels + their full prompts, preview labels, error messages). The other 10 locales fall back to English via vue-i18n until translators backfill (follow-up task already spawned).

== Card schemas covered (full catalogue audit) ==
Verified each catalogue entry against its renderer. The AI now emits fully-populated cardData for:

• TASKLIST: fields (multi-select 1-7), groupBy (0/2/3/4), projectId.
• QueueListComp: statusArray from company status keys.
• TimeEstimatedComp / TimeTrackComp / TimeEstimatedWorkloadComp: logtype enum (1-3), timerange enum (1-8), AssigneeUserId, projectId.
• TotalUrgentTasksComp: measure enum (1-3 with $numberLong handling), calculation enum (1-6), timerange, taskLabel, AssigneeUserId.
• WorkloadByStatus* / TasksByAssignee*: isPercentage, isShowLegend, isShowDataLabels, isParentTask, projectId.
• CalendarCard: projectId only (its renderer reads only projectId).

== Deferred (separate follow-ups) ==

• Streaming generation, chat-style refinement, inline preview editing.
• Server-side card validation hardening (benefits the manual flow too).
• 3x duplicate TotalUrgentTasksComp entries in cardComponent.json.
• Translation backfill for the 10 non-English locales.

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