feat!: re-work messaging parts and sharding

[weboko]

Description

Due to root message related types (i.e IDecodedMessage) we incur some inefficiency and lack of needed properties.

Proposed Solution / Feature Design

We need to do couple of things to hide complexity of types and make them more consumer firendly:

• remove not needed proto package on interfaces;
• move message-encryption to core package;
• ensure types of decoders are used;

Notes

• Resolves feat: improve messaging types and sharding #2356
• Related to feat: introduce createDecoder and createEncoder on IWaku #2352

---

Checklist

• Code changes are covered by unit tests.
• Code changes are covered by e2e tests, if applicable.
• Dogfooding has been performed, if feasible.
• A test version has been published, if required.
• All CI checks pass successfully.

[Copilot]

Pull Request Overview

This PR removes the standalone message-hash package by merging its functionality into core, introduces a messageHashStr convenience wrapper with accompanying tests, and updates encryption decoders/interfaces to use a new IEncryptedMessage type.

• Remove packages/message-hash and update workspaces/manifests
• Merge messageHash (+ new messageHashStr) into core and extend test coverage
• Update encryption decoders and shared interfaces to use IEncryptedMessage

Reviewed Changes

Copilot reviewed 35 out of 35 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
packages/message-hash/**	Removed obsolete standalone message-hash package files
packages/core/src/lib/message_hash/message_hash.ts	Added messageHashStr and updated documentation comments
packages/core/src/lib/message_hash/message_hash.spec.ts	Renamed suite and added tests for messageHashStr
packages/interfaces/src/message.ts	Introduced IEncryptedMessage, cleaned up duplicate definitions
packages/message-encryption/src/symmetric.ts, ecies.ts, decoded_message.ts	Updated decoders to return IEncryptedMessage
packages/core/src/index.ts	Exported messageHash and messageHashStr from core entry
.size-limit.cjs	Updated size-limit path to point at core bundle
package.json, .release-please-manifest.json	Removed message-hash package references

Comments suppressed due to low confidence (2)

.size-limit.cjs:62

• The path field is now an array, but size-limit typically expects a string. Verify that this syntax is supported or change back to a string to prevent configuration errors.

    path: ["packages/core/bundle/index.js"],

packages/core/src/index.ts:24

• [nitpick] You've exposed messageHashStr at the core entrypoint, but the top-level README or public documentation hasn't been updated to mention this new API. Consider adding usage examples to keep docs in sync.

export { messageHash, messageHashStr } from "./lib/message_hash/index.js";

[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
Waku node	63.45 KB (+0.17% 🔺)	1.3 s (+0.17% 🔺)	10.1 s (+0.14% 🔺)	11.4 s
Waku Simple Light Node	117.21 KB (+0.12% 🔺)	2.4 s (+0.12% 🔺)	10 s (-14.59% 🔽)	12.4 s
ECIES encryption	23.06 KB (-0.29% 🔽)	462 ms (-0.29% 🔽)	4 s (+5.36% 🔺)	4.4 s
Symmetric encryption	22.52 KB (-0.04% 🔽)	451 ms (-0.04% 🔽)	3.5 s (+77.36% 🔺)	4 s
DNS discovery	50.75 KB (0%)	1.1 s (0%)	6.1 s (+27.11% 🔺)	7.1 s
Peer Exchange discovery	51.13 KB (0%)	1.1 s (0%)	5.2 s (-44.29% 🔽)	6.2 s
Local Peer Cache Discovery	44.49 KB (0%)	890 ms (0%)	4.3 s (-6.89% 🔽)	5.2 s
Privacy preserving protocols	52.02 KB (+0.08% 🔺)	1.1 s (+0.08% 🔺)	7.5 s (+23.37% 🔺)	8.5 s
Waku Filter	54.05 KB (-0.05% 🔽)	1.1 s (-0.05% 🔽)	5.5 s (+12.92% 🔺)	6.5 s
Waku LightPush	51.37 KB (0%)	1.1 s (0%)	6.8 s (+21.12% 🔺)	7.8 s
History retrieval protocols	51.63 KB (0%)	1.1 s (0%)	6 s (-7.42% 🔽)	7 s
Deterministic Message Hashing	16.03 KB (+120.16% 🔺)	321 ms (+120.16% 🔺)	3.5 s (+162.59% 🔺)	3.8 s

[adklempner]

LGTM