docs: add full GitHub wiki for ECHO mod stack ecosystem

[knoxhack]

Motivation

• Provide a single, discoverable documentation hub that describes the full ECHO modular stack, onboarding, development contracts, and release workflow.
• Bootstrap the repository's GitHub Wiki contents so contributors and players have a ready set of pages for operations, addon guidance, and lore.

Description

• Added a wiki/ directory containing nine markdown pages: Home.md, Getting-Started.md, Architecture.md, Modules-and-Versions.md, Progression-Guide.md, Addon-Development.md, Build-and-Release.md, Troubleshooting.md, and Lore-and-World-Canon.md.
• Home page includes top-level navigation and baseline requirements (Minecraft, NeoForge, Java) and documents stack principles and contract expectations.
• Build-and-Release.md documents workspace build commands and verification steps including buildEchoWorkspace, verifyEchoRelease, and resource/gameplay validators.
• Architecture.md and Addon-Development.md capture integration contracts for echocore and echoterminal, and recommended addon skeleton and compatibility guidance.

Testing

• Verified the new files exist under wiki/ and inspected their contents with file listing and nl/sed output, confirming the expected pages and text were created.
• Repository snapshot was updated and PR metadata was generated using the repository tooling (make_pr) to record this change.
• All repository checks and file inspections executed during the rollout completed successfully.

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Codex Task

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Correct Agriculture Reclamation version in module table

Update this row to match the authoritative module version: addons/echoagriculturereclamation/gradle.properties declares mod_version=0.1.1, but the wiki lists 0.1.0. Because release verification and jar naming are version-exact (see build.gradle checkEchoModJarSet), this mismatch can send contributors looking for the wrong artifact/version during release prep and troubleshooting.

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