deps: update dependencies to latest

[jongio]

Routine dependency refresh: astro moves up two patch releases, pnpm moves to 11.18.0, and the lockfile picks up the transitive updates that came with them.

Direct

package	from	to
astro	^7.1.4	^7.1.6
pnpm (packageManager)	11.17.0	11.18.0

Notable transitive

package	from	to
vite	8.1.3	8.2.0
rolldown	1.1.4	1.2.1
lightningcss	1.32.0	1.33.0
@astrojs/compiler-rs (and platform bindings)	0.3.1	0.3.2
@astrojs/language-server	2.16.11	2.16.13
@astrojs/internal-helpers	0.10.1	0.10.2
@astrojs/markdown-satteri	0.3.4	0.3.5
satteri	0.9.4	0.9.5
prettier	3.9.4	3.9.6
@eslint-community/eslint-utils	4.9.1	4.10.1
globals	17.7.0	17.8.0
acorn	8.17.0	8.18.0

86 lockfile entries moved in total.

pnpm-workspace.yaml needed no minimumReleaseAgeExclude additions this time. Every new version already clears the supply chain policy window, and a clean pnpm install --frozen-lockfile outside the worktree confirms CI won't trip the check.

No source changes were needed. peerDependencies already cover astro ^7 and tailwindcss ^4, so they're unchanged.

Validation: build, lint, typecheck, and tests all pass (16/16 tests, astro check reports 0 errors and 0 warnings). pnpm audit reports no known vulnerabilities.