add Rate limit docs

[evanorti]

Add rate limit documentation to docs site. Includes migration from ibc-apps.

[greptile-apps]

Greptile Summary

This PR adds a complete Rate Limit Middleware documentation set to the IBC docs site, covering overview, integration (IBC v1 and v2), limit configuration, and migration from ibc-apps. It also fixes a long-standing fmt.Errof typo in the middleware development guide for both latest/ and next/.

• New overview.mdx provides detailed explanations of quotas, net-flow accounting, rolling windows, packet-failure reversal, and whitelist/blacklist ordering, including an embedded Mermaid sequence diagram.
• New integration.mdx rewrites the wiring guide with verified code blocks for both IBC v1 (IBCStackBuilder) and v2 (direct module wrapping), plus a PFM stacking example. Previously flagged issues (missing SetOrderInitGenesis/SetOrderExportGenesis call and absent PFM wiring code) are resolved in this revision.
• New migration.mdx covers the ibc-apps v10 → ibc-go v11 migration with diff-style before/after blocks for imports, keeper, v1/v2 wiring, and AppModule constructor.

Confidence Score: 5/5

Safe to merge. All changes are documentation; no code is executed at runtime.

The documentation is well-structured and code-verified, previously flagged correctness issues are resolved, and the remaining notes are minor stylistic inconsistencies in code comments and an SEO question about noindex removal from next/ pages.

ibc/latest/middleware/rate-limit-middleware/integration.mdx and its next/ counterpart for the stack-comment inconsistency; ibc/next/ overview, integration, and setting-limits for the intentionality of the noindex/canonical removal.

Important Files Changed

Filename	Overview
docs.json	Adds Rate Limit Middleware navigation group for both latest/ and next/ versions with all four new pages correctly registered.
ibc/CLAUDE.md	Directory tree updated to include migration.mdx alongside the other rate-limit-middleware pages in next/.
ibc/latest/ibc/middleware/develop.mdx	One-line typo fix: fmt.Errof → fmt.Errorf in a code snippet. Correct fix, mirrored in next/.
ibc/latest/middleware/rate-limit-middleware/integration.mdx	Major content rewrite adding complete v1 and v2 wiring examples; previously raised issues with genesisModuleOrder and PFM example are resolved. Minor inconsistency: v1 stack comment includes core IBC as a layer, but the PFM section in the same file correctly omits it.
ibc/latest/middleware/rate-limit-middleware/migration.mdx	New file documenting migration from ibc-apps v10 to ibc-go v11; covers imports, keeper changes, v1/v2 wiring, and AppModule constructor updates with clear diff blocks.
ibc/latest/middleware/rate-limit-middleware/overview.mdx	Comprehensive rewrite covering quotas, net-flow accounting, rolling windows, reversal on failure, and whitelist/blacklist ordering. Includes a Mermaid sequence diagram for packet flow.
ibc/latest/middleware/rate-limit-middleware/setting-limits.mdx	Expanded to cover all four governance messages, quota field validation rules, genesis-only whitelist/blacklist configuration, and query commands for verifying limits.
ibc/next/middleware/rate-limit-middleware/integration.mdx	Synced from latest/ with links updated to /ibc/next/ paths. Removes noindex/canonical front matter; same minor stack comment inconsistency as latest/ version.
ibc/next/middleware/rate-limit-middleware/migration.mdx	New file, parallel to latest/ version with /ibc/next/ links. Content is identical in substance.
ibc/next/middleware/rate-limit-middleware/overview.mdx	Synced from latest/; noindex/canonical removed, links updated to next/ paths.
ibc/next/middleware/rate-limit-middleware/setting-limits.mdx	Synced from latest/; noindex/canonical removed, links updated to next/ paths.
work-log/rate-limit.md	Work log entry correctly formatted per work-log/CLAUDE.md, covering all major changes in the PR.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    subgraph v1["IBC v1 Transfer Stack"]
        direction TB
        CoreIBC_v1["IBC Core (channel keeper)"]
        RL_v1["Rate Limiting Middleware"]
        PFM_v1["Packet Forward Middleware (optional)"]
        Transfer_v1["Transfer Module"]
        CoreIBC_v1 --> RL_v1 --> PFM_v1 --> Transfer_v1
    end
    subgraph v2["IBC v2 (direct wrapping)"]
        direction TB
        RouterV2["IBC v2 Router"]
        RL_v2["Rate Limiting v2 Middleware"]
        Transfer_v2["Transfer v2 Module"]
        RouterV2 --> RL_v2 --> Transfer_v2
    end
    Gov["Governance (MsgAddRateLimit etc.)"] --> Keeper["RateLimitKeeper"]
    Keeper --> RL_v1
    Keeper --> RL_v2
    style v1 fill:#e8f4fd,stroke:#2196F3
    style v2 fill:#e8f5e9,stroke:#4CAF50
    style Gov fill:#fff3e0,stroke:#FF9800

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%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
flowchart TD
    subgraph v1["IBC v1 Transfer Stack"]
        direction TB
        CoreIBC_v1["IBC Core (channel keeper)"]
        RL_v1["Rate Limiting Middleware"]
        PFM_v1["Packet Forward Middleware (optional)"]
        Transfer_v1["Transfer Module"]
        CoreIBC_v1 --> RL_v1 --> PFM_v1 --> Transfer_v1
    end
    subgraph v2["IBC v2 (direct wrapping)"]
        direction TB
        RouterV2["IBC v2 Router"]
        RL_v2["Rate Limiting v2 Middleware"]
        Transfer_v2["Transfer v2 Module"]
        RouterV2 --> RL_v2 --> Transfer_v2
    end
    Gov["Governance (MsgAddRateLimit etc.)"] --> Keeper["RateLimitKeeper"]
    Keeper --> RL_v1
    Keeper --> RL_v2
    style v1 fill:#e8f4fd,stroke:#2196F3
    style v2 fill:#e8f5e9,stroke:#4CAF50
    style Gov fill:#fff3e0,stroke:#FF9800

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_{Reviews (3): Last reviewed commit: "updates" | Re-trigger Greptile}

[linear-code]

FOU-635

[evanorti]

@greptileai

[evanorti]

@greptileai
please rereview