chore(deps): deferred majors — Templates dir wave + terraform provider (2026-08-14)

[stevenfackley]

From the 2026-08-14 fleet sweep. Main-app minors were merged or rebase-poked for auto-merge; these majors are deferred pending deliberate decisions:

Templates content (product decision, not dep hygiene — the templates ARE the product's output):

• typescript 5.x → 7.0.2 across V0/V1/V2/Tier3 template dirs: deps(npm)(deps-dev): bump typescript from 5.9.3 to 7.0.2 in /src/StackAlchemist.Templates/V2-Python-React/frontend #278, deps(npm)(deps-dev): bump typescript from 5.9.3 to 7.0.2 in /src/StackAlchemist.Templates/V2-DotNet-NextJs/nextjs #275, deps(npm)(deps-dev): bump typescript from 5.9.3 to 7.0.2 in /src/StackAlchemist.Templates/V1-Python-React/frontend #274, deps(npm)(deps-dev): bump typescript from 5.9.3 to 7.0.2 in /src/StackAlchemist.Templates/V1-DotNet-NextJs/nextjs #271, deps(npm)(deps-dev): bump typescript from 5.7.3 to 7.0.2 in /src/StackAlchemist.Templates/V0-Spark-NextJs #270, deps(npm)(deps-dev): bump typescript from 5.9.3 to 7.0.2 in /src/StackAlchemist.Templates/Tier3-Infrastructure/infra/cdk #267
• @types/node 22 → 26: deps(npm)(deps-dev): bump @types/node from 22.20.1 to 26.2.0 in /src/StackAlchemist.Templates/V2-DotNet-NextJs/nextjs #277, deps(npm)(deps-dev): bump @types/node from 22.20.1 to 26.2.0 in /src/StackAlchemist.Templates/V1-DotNet-NextJs/nextjs #273, deps(npm)(deps-dev): bump @types/node from 22.10.5 to 26.2.0 in /src/StackAlchemist.Templates/V0-Spark-NextJs #269, deps(npm)(deps-dev): bump @types/node from 22.20.1 to 26.2.0 in /src/StackAlchemist.Templates/Tier3-Infrastructure/infra/cdk #266
• next 15.5 → 16.2: deps(npm)(deps): bump next from 15.5.23 to 16.3.0 in /src/StackAlchemist.Templates/V2-DotNet-NextJs/nextjs #276, deps(npm)(deps): bump next from 15.5.23 to 16.3.0 in /src/StackAlchemist.Templates/V1-DotNet-NextJs/nextjs #272, deps(npm)(deps): bump next from 15.5.21 to 16.3.0 in /src/StackAlchemist.Templates/V0-Spark-NextJs #268
• docker bases (node 24→26-alpine, python 3.12→3.14-slim): deps(docker): bump node from 24-alpine to 26-alpine in /src/StackAlchemist.Templates/V2-Python-React/infra #256, deps(docker): bump python from 3.12-slim to 3.14-slim in /src/StackAlchemist.Templates/V2-Python-React/infra #254, deps(docker): bump node from 24-alpine to 26-alpine in /src/StackAlchemist.Templates/V1-Python-React/infra #253, deps(docker): bump python from 3.12-slim to 3.14-slim in /src/StackAlchemist.Templates/V1-Python-React/infra #252, deps(docker): bump node from 24-alpine to 26-alpine in /src/StackAlchemist.Templates/V1-DotNet-NextJs/infra #251

Decide once what stack versions the generated templates should target, then take the whole wave together — piecemeal merges leave templates internally inconsistent.

Infra:

• deps(terraform): update hashicorp/aws requirement from ~> 5.84 to ~> 6.58 in /src/StackAlchemist.Templates/Tier3-Infrastructure/infra/terraform #282 terraform hashicorp/aws ~>5.84 → ~>6.58 (Tier3 template infra) — provider major, needs a plan-diff review like the undertow-engine one (undertow-engine#205).