feat: Add guild charters and task boards for various components

- Introduced guild charters for Scanner Deno, PHP, Ruby, Native, WebService, Java, Surface.Env, Surface.FS, Surface.Secrets, Surface.Validation, UI, Zastava Observer, Zastava Webhook, Zastava Core, and Plugin Platform.
- Each charter outlines the mission, scope, required reading, and working agreements for the respective guilds.
- Created task boards for Surface.Env, Surface.FS, Surface.Secrets, Surface.Validation, and Zastava components to track progress and dependencies.
- Ensured all documents emphasize determinism, offline readiness, security, and integration with shared Surface libraries.

src/Scanner/__Libraries/StellaOps.Scanner.Analyzers.Lang.Node/AGENTS.md

@@ -37,3 +37,14 @@ Deliver the Node.js / npm / Yarn / PNPM analyzer plug-in that resolves workspace
   - `policyHint.installLifecycle` lists lifecycle scripts (`preinstall;install;postinstall`) observed for a package.
   - `script.<name>` stores the canonical command string for each lifecycle script.
 - Evidence: lifecycle script entries emit `LanguageEvidenceKind.Metadata` pointing to `package.json#scripts.<name>` with SHA-256 hashes for determinism.
+
+## Required Reading
+- `docs/modules/scanner/architecture.md`
+- `docs/modules/platform/architecture-overview.md`
+
+## Working Agreement
+- 1. Update task status to `DOING`/`DONE` in both `docs/implplan/SPRINTS.md` and the local `TASKS.md` when you start or finish work.
+- 2. Review this charter and the Required Reading documents before coding; confirm prerequisites are met.
+- 3. Keep changes deterministic (stable ordering, timestamps, hashes) and align with offline/air-gap expectations.
+- 4. Coordinate doc updates, tests, and cross-guild communication whenever contracts or workflows change.
+- 5. Revert to `TODO` if you pause the task without shipping changes; leave notes in commit/PR descriptions for context.