Sangeetha-Grantha

Metadata	Value
Status	Completed
Version	2.0.0
Last Updated	2026-07-10
Author	Sangeetha Grantha Team

Goal

Batch 3a — Upgrade Kotlin 2.3.0 → 2.4.0 (stable) across the backend, shared KMP domain, and mobile. The Compose compiler plugin is version-locked to Kotlin, so Compose Multiplatform must be validated in the same change.

Scope (gradle/libs.versions.toml)

• Kotlin 2.3.0 → 2.4.0 — kotlin, all kotlin* plugins, and composeCompiler (ref’d to kotlin).
• Compose Multiplatform 1.10.0 → verify the version paired with Kotlin 2.4.0 (check JetBrains compatibility matrix before bumping).
• Re-check coupled libs at Kotlin 2.4: kotlinx-coroutines 1.10.2, serialization 1.10.0, Koin 4.x, Ktor 3.x.

Implementation Plan

1. Bump kotlin in libs.versions.toml; resolve compose compiler / CMP compatibility from the JetBrains matrix.
2. ./gradlew :modules:backend:api:build — fix any language-level deprecations / warnings (project targets zero warnings, TRACK-099).
3. Build the shared KMP domain + mobile targets; confirm Compose MP compiles.
4. make test (backend) + integration tests via Testcontainers.
5. Sync version docs (current-versions.md, tech-stack.md, getting-started.md, plus Memory tech-stack note).
6. Commit per commit-policy.

Risks

• Widest blast radius of all batches — backend + KMP + mobile + Compose compiler.
• Compose compiler/CMP version must be confirmed against Kotlin 2.4 before bumping; mismatch breaks the build.
• Best run as a dedicated session with full test cycles; not a quick drop-in.

Completion (2026-07-10)

Kotlin 2.4.0 + Compose Multiplatform 1.11.1 (CMP 1.11 requires Kotlin ≥ 2.3; compose compiler ships with Kotlin, composeCompiler stays ref’d to kotlin). Fallout handled:

• iosX64 dropped from :shared:presentation — CMP 1.11 no longer publishes x64 iOS artifacts (resolution failure on runtime/foundation/ui for iosX64). The pure-Kotlin :shared:domain still targets iosX64.
• compose.* plugin accessors deprecated → explicit version-catalog deps. Component split versions: runtime/foundation/ui ride the CMP version (1.11.1); material3 is on its own train (1.9.0); material-icons-extended is frozen upstream at 1.7.3 (future: Material Symbols).
• -Xexplicit-backing-fields removed from both shared modules — in-language since Kotlin 2.4 (the flag became a redundancy warning; zero-warnings target, TRACK-099).
• Kotlin/Native sourceInfoType=none → noop (value renamed in 2.4).
• Coupled libs (coroutines 1.10.2, serialization 1.10.0, Koin 4.2.1, Ktor 3.5.0) unchanged — all compatible. Verified: backend :api:build + full dal+api test suites (incl. Testcontainers integration on the new 2.0.5 substrate) and both KMP modules build warning-free. Version docs synced.