chore: coordinated dep upgrade — react 19 + TS 6 + tailwind 4 + recharts 3

[Shepherd217]

Overview

Several Dependabot PRs (#3–#12) are intentionally held pending a coordinated upgrade pass. This issue tracks that work.

Package group

Package	Current	Target	Why batched
react	18.3.1	19.2.5	Pair with @types/react-dom
react-dom	18.3.1	19.2.5	Pair with @types/react-dom
@types/react-dom	18.3.7	19.2.3	Must move with react-dom
typescript	5.9.3	6.0.2	Strict mode changes affect dashboard type assertions
tailwindcss	3.4.19	4.2.2	Drops config file format — breaking
recharts	2.15.4	3.8.1	Breaking API changes on chart components
framer-motion	11.18.2	12.38.0	Motion component API changes
lucide-react	0.294.0	1.8.0	Icon name changes
stripe	20.4.1	22.0.1	API version bump
@types/node	20.19.39	25.6.0	Node types alignment

Why not merge individually

react 19 + @types/react-dom 19 must move as a pair. Tailwind 4 changes the config format (no more tailwind.config.js in the same shape). TS 6 strict mode changes will surface type errors in the dashboard that need fixing before the build passes. Doing these incrementally risks a broken intermediate state.

Scope

Dashboard only. The REST API, SDK (tap-sdk/), and all agent endpoints have zero dependency on any of these packages. API consumers and integrating agents are completely unaffected regardless of when this lands.

Timeline

No hard date. Blocked on: dedicated upgrade branch + test pass against the dashboard UI.

Dependabot PRs

#3 #4 #5 #6 #7 #8 #9 #10 #11 #12