feat: project colors, timeline filters, sidebar fix, GitLooper agent, and misc improvements

- Fix sidebar double-highlight on /vacations/my (Gitea #6): add isNavItemActive() helper
- Add project color picker (schema + API + modal + timeline rendering)
- Add ProjectCombobox/ResourceCombobox to timeline toolbar
- Show PENDING vacations on timeline with dashed/dimmed style
- Add "show demand projects" preference with localStorage persistence
- Add ProjectAssignmentsTable with total hours/cost columns
- Extend vacation API to accept status arrays
- Add GitLooper formal YAML agent configuration
- Extend user admin with permission overrides UI
- Add delete-assignment use case tests
- Add status-styles.ts shared badge constants
- Centralize formatMoney/formatCents in format.ts

Co-Authored-By: claude-flow <ruv@ruv.net>

packages/api/src/router/project.ts

@@ -134,6 +134,7 @@ export const projectRouter = createTRPCRouter({
           endDate: input.endDate,
           status: input.status,
           responsiblePerson: input.responsiblePerson,
+          ...(input.color !== undefined ? { color: input.color } : {}),
           staffingReqs: input.staffingReqs as unknown as import("@planarchy/db").Prisma.InputJsonValue,
           dynamicFields: input.dynamicFields as unknown as import("@planarchy/db").Prisma.InputJsonValue,
           blueprintId: input.blueprintId,
@@ -185,6 +186,7 @@ export const projectRouter = createTRPCRouter({
           ...(input.data.endDate !== undefined ? { endDate: input.data.endDate } : {}),
           ...(input.data.status !== undefined ? { status: input.data.status } : {}),
           ...(input.data.responsiblePerson !== undefined ? { responsiblePerson: input.data.responsiblePerson } : {}),
+          ...(input.data.color !== undefined ? { color: input.data.color } : {}),
           ...(input.data.staffingReqs !== undefined ? { staffingReqs: input.data.staffingReqs as unknown as import("@planarchy/db").Prisma.InputJsonValue } : {}),
           ...(input.data.dynamicFields !== undefined ? { dynamicFields: input.data.dynamicFields as unknown as import("@planarchy/db").Prisma.InputJsonValue } : {}),
           ...(input.data.blueprintId !== undefined ? { blueprintId: input.data.blueprintId } : {}),