Add user extrapolation feature with two-column potential cost breakdown dialog and comprehensive projected cost analysis (#32)

* Initial plan

* Complete PR limit extrapolation feature implementation

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Initial step: Update imports and add projected users dialog functionality

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Complete projected users dialog and improve layout flexibility

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Improve projected users dialog: increase width to 80% and add total row with monetary cost calculations

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Fix projected users dialog width by setting both width and max-width to 90vw to override default constraints

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Fix projected users dialog width using !max-w-[80vw] to override default sm:max-w-lg constraint

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Fix projected users dialog width constraint and add projected monthly total and cost to summary section

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Add projected extra cost panel to potential cost breakdown dialog

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Convert projected users dialog to two-column layout for improved readability

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Fix projected users dialog two-column layout by using md: breakpoint instead of lg:

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Fix projected users dialog width constraint using !max-w-none

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

* Fix dialog column layouts: move two-column layout from projected users to potential cost breakdown dialog

Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: rajbos <6085745+rajbos@users.noreply.github.com>

Author: Copilot