[DOC] update download page for 26.06.1 release [skip ci]

[nvliyuan]

Description

This PR updates the release-branch download and archive documentation for the v26.06.1 hotfix release.

Changes include:

• Update docs/download.md to list v26.06.1 artifacts, Maven coordinates, and signature verification commands.
• Add the v26.06.1 hotfix notes for Hadoop vectored reads and Databricks 17.3 compatibility.
• Move the previous current release, v26.06.0, into docs/archive.md as the newest archived release.
• Preserve the support matrix from release/26.06.

Validation:

• git diff --check -- docs/download.md docs/archive.md
• IDE lints for docs/download.md and docs/archive.md

Checklists

Documentation

• Updated for new or modified user-facing features or behaviors
• No user-facing change

Testing

• Added or modified tests to cover new code paths
• Covered by existing tests
• Not required

Performance

• Tests ran and results are added in the PR description
• Issue filed with a link in the PR description
• Not required

[greptile-apps]

Greptile Summary

This documentation-only PR bumps the current release page from v26.06.0 to v26.06.1 and archives the previous release. All artifact URLs, Maven coordinates, and signature-verification commands in docs/download.md are consistently updated to 26.06.1, and a corresponding v26.06.0 entry — with the full hardware/software matrix and download table — is prepended to docs/archive.md.

• docs/download.md: Release heading, all 8 download rows (CUDA 12/13 × x86_64/arm64 × Scala 2.12/2.13), Maven versions, and gpg --verify commands updated from 26.06.0 → 26.06.1; two hotfix notes added for the Hadoop vectored-read buffer regression and Databricks 17.3 SessionCatalog API change.
• docs/archive.md: A new ## Release v26.06.0 section is inserted at the top of the archive with the full support matrix, download table, and release notes preserved from the previous download.md.

Confidence Score: 5/5

Documentation-only change updating two Markdown files for the v26.06.1 hotfix release; no code paths are affected.

All 8 download artifact URLs, Maven coordinates, and signature commands in docs/download.md are consistently bumped to 26.06.1. The archived v26.06.0 block in docs/archive.md faithfully reproduces the previous download page content. No version mismatches or stale references were found.

No files require special attention.

Important Files Changed

Filename	Overview
docs/download.md	All version references (heading, 8 download rows, Maven coordinates, gpg commands) consistently updated from 26.06.0 to 26.06.1; hotfix release notes added above the v26.06.0 notes.
docs/archive.md	v26.06.0 section prepended at the top of the archive with complete hardware/software matrix, download table, and release notes; existing archive entries are untouched.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[PR: v26.06.1 hotfix release doc update] --> B[docs/download.md]
    A --> C[docs/archive.md]
    B --> B1[Heading bumped: v26.06.0 → v26.06.1]
    B --> B2[8 artifact rows updated CUDA 12 + 13 x x86_64/arm64 x Scala 2.12/2.13]
    B --> B3[Maven coordinates: version 26.06.1]
    B --> B4[gpg --verify commands: 26.06.1 jars]
    B --> B5[Release notes: 2 hotfix bullets added + v26.06.0 notes retained below]
    C --> C1[v26.06.0 section prepended at top of archive]
    C1 --> C2[Hardware/software matrix]
    C1 --> C3[Download table 8 rows]
    C1 --> C4[Signature section]
    C1 --> C5[v26.06.0 release notes]

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flowchart TD
    A[PR: v26.06.1 hotfix release doc update] --> B[docs/download.md]
    A --> C[docs/archive.md]
    B --> B1[Heading bumped: v26.06.0 → v26.06.1]
    B --> B2[8 artifact rows updated CUDA 12 + 13 x x86_64/arm64 x Scala 2.12/2.13]
    B --> B3[Maven coordinates: version 26.06.1]
    B --> B4[gpg --verify commands: 26.06.1 jars]
    B --> B5[Release notes: 2 hotfix bullets added + v26.06.0 notes retained below]
    C --> C1[v26.06.0 section prepended at top of archive]
    C1 --> C2[Hardware/software matrix]
    C1 --> C3[Download table 8 rows]
    C1 --> C4[Signature section]
    C1 --> C5[v26.06.0 release notes]

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[NvTimLiu]

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