fix: OpenRouter model routing regression + project input validation

Covers PRs NousResearch#11, NousResearch#13, NousResearch#14, NousResearch#15: Sprint 15 features, security hardening,
OpenRouter routing fix, project picker UX fixes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Task NousResearch#14: FreeBSD Compatibility Audit (partial completion)

Changes:
- Added FreeBSD to PLATFORM_MAP in agent/skill_utils.py and tools/skills_tool.py
- Created comprehensive audit report documenting FreeBSD compatibility issues
- Identified voice tools as unavailable on FreeBSD (ctranslate2 has no wheels)
- Documented clipboard support gap for FreeBSD
- Verified PTY fallback mechanism works when ptyprocess unavailable

Files modified:
- agent/skill_utils.py: Added "freebsd": "freebsd" to PLATFORM_MAP
- tools/skills_tool.py: Added "freebsd": "freebsd" to _PLATFORM_MAP
- PLANS/task-coordination.md: Updated task status and added completion notes
- PLANS/freebsd-audit.md: Created detailed audit report with findings

Next steps: Apply remaining high-priority fixes (clipboard support, setup script)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

…s strip

…on export, pinned sessions, context meter

Ported from ibelick/webclaw PRs NousResearch#24, #10, NousResearch#14, NousResearch#13:
- Command palette (⌘K): search and switch sessions instantly
- Conversation export: download as Markdown, JSON, or Plain Text
- Pinned sessions: pin/unpin from context menu, shown at top of sidebar
- Context meter: token usage ring in chat header with hover details
- Keyboard shortcuts: ⌘K search, ⌘⇧O new session

New UI primitives: autocomplete, command, input, preview-card
Attachment button/preview components (composer already has built-in support)

…)' (NousResearch#14) from sync/upstream-2026-04-10 into main

The upstream merge (PR NousResearch#14) auto-resolved gateway/run.py's 1598-line
diff and silently dropped the entire self-nudge system (~55 lines in
gateway/run.py, ~37 in run_agent.py, ~5 in model_tools.py). This
broke notify_on_complete for background processes — the mechanism that
fires a hidden turn when a background process exits was gone.

Cherry-picked b8737bc ("feat(gateway): add one-shot self nudge tool")
on top of the merged state, resolving 3 conflicts in gateway/run.py
(media_message_callback + self_nudge_callback coexistence) and 1 in
tests/test_model_tools.py (kept both clarify + self_nudge tests).

The self-nudge system provides:
- _arm_self_nudge / _cancel_self_nudge / _fire_self_nudge in gateway
- self_nudge_callback on AIAgent for tool-initiated delayed turns
- self_nudge tool exposed on gateway platforms (not CLI)
- _pending_hidden_turns for injecting hidden messages on next turn
- Wired to notify_on_complete in terminal_tool.py via
  process_registry.pending_watchers

…EADME, AGENTS, website

Completes the remaining ADDING_A_PLATFORM.md integration points after
the MVP vertical slice (ff70b47..3babac1). Fork is now feature-
complete per Hermes's own platform checklist; all that's left for an
upstream PR is the 1-pt decision on whether NousResearch accepts
social-network platforms.

Integration points added:
  - cron/scheduler.py  — `"agentchat": Platform.AGENTCHAT` in
    delivery platform_map so `cronjob(deliver="agentchat:<ch>")` routes
  - tools/cronjob_tools.py — `deliver` param schema now documents
    `agentchat:welcome` as a valid target format
  - hermes_cli/status.py — `AgentChat` row showing `AGENTCHAT_TOKEN` +
    `AGENTCHAT_HOME_CHANNEL` configuration state in `hermes status`
  - hermes_cli/gateway.py — setup wizard `_PLATFORMS` entry with
    interactive prompts for TOKEN / AGENT_ID / ALLOWED_USERS /
    HOME_CHANNEL / REQUIRE_MENTION / WS_URL (`hermes setup gateway`
    → pick AgentChat)

Docs added / updated:
  - website/docs/user-guide/messaging/agentchat.md — NEW full setup
    guide: prerequisites, env vars table, trigger semantics,
    outbound behavior, MVP limitations, troubleshooting, related
    npm packages (agentchat-mcp, openclaw-agentchat)
  - website/docs/user-guide/messaging/index.md — row in platform
    table + link in Next Steps list
  - website/docs/reference/environment-variables.md — 8 new
    AGENTCHAT_* variable rows
  - README.md — AgentChat added to Messaging Gateway platform list
  - AGENTS.md — `gateway/platforms/` listing updated

channel_directory.py intentionally not modified — AgentChat falls
through the default session-based discovery path (`_build_from_sessions`)
which is the correct behavior for platforms without native
channel-list APIs exposed in the adapter.

redact.py intentionally not modified — AgentChat agent_ids are the
canonical public handle for messaging (like Matrix `@user:server`),
not PII. No regex-level redaction needed.

Verified:
  - 20 unit tests still pass (0.84s)
  - All 4 modified .py files pass `ast.parse`
  - Real-world roundtrip previously verified (sha:3babac1 commit msg)

Fork state after this commit: 9 of 16 ADDING_A_PLATFORM.md points
covered directly, 3 (NousResearch#11 channel_directory, NousResearch#14 redact, NousResearch#16 integration
tests) intentionally skipped with justification, 20 unit tests cover
the 5 core boundary invariants.

PM had no GitHub tools — claimed PR NousResearch#14 merged to develop but it
merged to main. Gave PM github toolset and step 9 to verify baseRefName
is 'develop' before declaring implementation complete.

updates for stability and speed

Task NousResearch#14: FreeBSD Compatibility Audit (partial completion)

Changes:
- Added FreeBSD to PLATFORM_MAP in agent/skill_utils.py and tools/skills_tool.py
- Created comprehensive audit report documenting FreeBSD compatibility issues
- Identified voice tools as unavailable on FreeBSD (ctranslate2 has no wheels)
- Documented clipboard support gap for FreeBSD
- Verified PTY fallback mechanism works when ptyprocess unavailable

Files modified:
- agent/skill_utils.py: Added "freebsd": "freebsd" to PLATFORM_MAP
- tools/skills_tool.py: Added "freebsd": "freebsd" to _PLATFORM_MAP
- PLANS/task-coordination.md: Updated task status and added completion notes
- PLANS/freebsd-audit.md: Created detailed audit report with findings

Next steps: Apply remaining high-priority fixes (clipboard support, setup script)

Task NousResearch#14: FreeBSD Compatibility Audit (partial completion)

Changes:
- Added FreeBSD to PLATFORM_MAP in agent/skill_utils.py and tools/skills_tool.py
- Created comprehensive audit report documenting FreeBSD compatibility issues
- Identified voice tools as unavailable on FreeBSD (ctranslate2 has no wheels)
- Documented clipboard support gap for FreeBSD
- Verified PTY fallback mechanism works when ptyprocess unavailable

Files modified:
- agent/skill_utils.py: Added "freebsd": "freebsd" to PLATFORM_MAP
- tools/skills_tool.py: Added "freebsd": "freebsd" to _PLATFORM_MAP
- PLANS/task-coordination.md: Updated task status and added completion notes
- PLANS/freebsd-audit.md: Created detailed audit report with findings

Next steps: Apply remaining high-priority fixes (clipboard support, setup script)